1156876540 has 24 divisors (see below), whose sum is σ = 2535069600. Its totient is φ = 442630848.

The previous prime is 1156876531. The next prime is 1156876559. The reversal of 1156876540 is 456786511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257015 + ... + 1257934.

It is an arithmetic number, because the mean of its divisors is an integer number (105627900).

Almost surely, 2^1156876540 is an apocalyptic number.

1156876540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156876540 is an abundant number, since it is smaller than the sum of its proper divisors (1378193060).

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

1156876540 is a wasteful number, since it uses less digits than its factorization.

1156876540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514981 (or 2514979 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 1156876540 is about 34012.8878515189. The cubic root of 1156876540 is about 1049.7736594518.

The spelling of 1156876540 in words is "one billion, one hundred fifty-six million, eight hundred seventy-six thousand, five hundred forty".