1161657356 has 12 divisors (see below), whose sum is σ = 2033147592. Its totient is φ = 580758048.

The previous prime is 1161657337. The next prime is 1161657407. The reversal of 1161657356 is 6537561611.

It is a happy 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, 40991 + ... + 63273.

It is an arithmetic number, because the mean of its divisors is an integer number (169428966).

Almost surely, 2^1161657356 is an apocalyptic number.

It is an amenable number.

1161657356 is a deficient number, since it is larger than the sum of its proper divisors (871490236).

1161657356 is a wasteful number, since it uses less digits than its factorization.

1161657356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35320 (or 35318 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 1161657356 is about 34083.0948712114. The cubic root of 1161657356 is about 1051.2177424248.

The spelling of 1161657356 in words is "one billion, one hundred sixty-one million, six hundred fifty-seven thousand, three hundred fifty-six".