1156616601 has 16 divisors (see below), whose sum is σ = 1805451648. Its totient is φ = 644803200.

The previous prime is 1156616579. The next prime is 1156616647. The reversal of 1156616601 is 1066166511.

It is not a de Polignac number, because 1156616601 - 2⁷ = 1156616473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1156616101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670810 + ... + 672531.

It is an arithmetic number, because the mean of its divisors is an integer number (112840728).

Almost surely, 2^1156616601 is an apocalyptic number.

It is an amenable number.

1156616601 is a deficient number, since it is larger than the sum of its proper divisors (648835047).

1156616601 is a wasteful number, since it uses less digits than its factorization.

1156616601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343392.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1156616601 is about 34009.0664529328. The cubic root of 1156616601 is about 1049.6950288904.

The spelling of 1156616601 in words is "one billion, one hundred fifty-six million, six hundred sixteen thousand, six hundred one".