1161390064 has 20 divisors (see below), whose sum is σ = 2255286456. Its totient is φ = 579380672.

The previous prime is 1161390031. The next prime is 1161390079. The reversal of 1161390064 is 4600931611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74839 + ... + 89014.

Almost surely, 2^1161390064 is an apocalyptic number.

It is an amenable number.

1161390064 is a deficient number, since it is larger than the sum of its proper divisors (1093896392).

1161390064 is a wasteful number, since it uses less digits than its factorization.

1161390064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164304 (or 164298 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1161390064 is about 34079.1734641555. The cubic root of 1161390064 is about 1051.1371094553.

The spelling of 1161390064 in words is "one billion, one hundred sixty-one million, three hundred ninety thousand, sixty-four".