1195400640 has 112 divisors (see below), whose sum is σ = 4337620992. Its totient is φ = 273232896.

The previous prime is 1195400639. The next prime is 1195400681. The reversal of 1195400640 is 460045911.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×1195400640² = 2857965380224819200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1195400598 and 1195400607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82224 + ... + 95663.

Almost surely, 2^1195400640 is an apocalyptic number.

1195400640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1195400640 is an abundant number, since it is smaller than the sum of its proper divisors (3142220352).

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

1195400640 is a wasteful number, since it uses less digits than its factorization.

1195400640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177914 (or 177904 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1195400640 is about 34574.5663747212. The cubic root of 1195400640 is about 1061.2991783548.

The spelling of 1195400640 in words is "one billion, one hundred ninety-five million, four hundred thousand, six hundred forty".