1161396544 has 56 divisors (see below), whose sum is σ = 2873337408. Its totient is φ = 452490240.

The previous prime is 1161396517. The next prime is 1161396547. The reversal of 1161396544 is 4456931611.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 1161396497 and 1161396506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161396547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112909 + ... + 122764.

Almost surely, 2^1161396544 is an apocalyptic number.

1161396544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1161396544 is an abundant number, since it is smaller than the sum of its proper divisors (1711940864).

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

1161396544 is a wasteful number, since it uses less digits than its factorization.

1161396544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235703 (or 235693 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 1161396544 is about 34079.2685367512. The cubic root of 1161396544 is about 1051.1390643987.

The spelling of 1161396544 in words is "one billion, one hundred sixty-one million, three hundred ninety-six thousand, five hundred forty-four".