1151274540 has 96 divisors (see below), whose sum is σ = 3479426496. Its totient is φ = 282746880.

The previous prime is 1151274521. The next prime is 1151274557. The reversal of 1151274540 is 454721511.

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 = 1151274498 and 1151274507.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404964 + ... + 407796.

It is an arithmetic number, because the mean of its divisors is an integer number (36244026).

Almost surely, 2^1151274540 is an apocalyptic number.

1151274540 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 1151274540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739713248).

1151274540 is an abundant number, since it is smaller than the sum of its proper divisors (2328151956).

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

1151274540 is a wasteful number, since it uses less digits than its factorization.

1151274540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379 (or 3377 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 1151274540 is about 33930.4367787979. The cubic root of 1151274540 is about 1048.0764601966.

The spelling of 1151274540 in words is "one billion, one hundred fifty-one million, two hundred seventy-four thousand, five hundred forty".