1153640886 has 16 divisors (see below), whose sum is σ = 2307639024. Its totient is φ = 384487424.

The previous prime is 1153640837. The next prime is 1153640899. The reversal of 1153640886 is 6880463511.

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, 46690 + ... + 66986.

It is an arithmetic number, because the mean of its divisors is an integer number (144227439).

Almost surely, 2^1153640886 is an apocalyptic number.

1153640886 is an abundant number, since it is smaller than the sum of its proper divisors (1153998138).

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

1153640886 is a wasteful number, since it uses less digits than its factorization.

1153640886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29775.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1153640886 is about 33965.2894290627. The cubic root of 1153640886 is about 1048.7940458439.

The spelling of 1153640886 in words is "one billion, one hundred fifty-three million, six hundred forty thousand, eight hundred eighty-six".