1195155540 has 192 divisors, whose sum is σ = 3877977600. Its totient is φ = 305206272.

The previous prime is 1195155517. The next prime is 1195155551. The reversal of 1195155540 is 455515911.

1195155540 is a `hidden beast` number, since 1 + 1 + 95 + 15 + 554 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1195155495 and 1195155504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2614992 + ... + 2615448.

It is an arithmetic number, because the mean of its divisors is an integer number (20197800).

Almost surely, 2^1195155540 is an apocalyptic number.

1195155540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1195155540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1938988800).

1195155540 is an abundant number, since it is smaller than the sum of its proper divisors (2682822060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1195155540 is a wasteful number, since it uses less digits than its factorization.

1195155540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The square root of 1195155540 is about 34571.0216800140. The cubic root of 1195155540 is about 1061.2266385997.

The spelling of 1195155540 in words is "one billion, one hundred ninety-five million, one hundred fifty-five thousand, five hundred forty".