151656613 has 4 divisors (see below), whose sum is σ = 159638560. Its totient is φ = 143674668.

The previous prime is 151656611. The next prime is 151656629. The reversal of 151656613 is 316656151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 151656613 - 2¹ = 151656611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151656611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3990945 + ... + 3990982.

It is an arithmetic number, because the mean of its divisors is an integer number (39909640).

Almost surely, 2^151656613 is an apocalyptic number.

It is an amenable number.

151656613 is a deficient number, since it is larger than the sum of its proper divisors (7981947).

151656613 is an equidigital number, since it uses as much as digits as its factorization.

151656613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7981946.

The product of its digits is 16200, while the sum is 34.

The square root of 151656613 is about 12314.8939500103. The cubic root of 151656613 is about 533.2781432040.

The spelling of 151656613 in words is "one hundred fifty-one million, six hundred fifty-six thousand, six hundred thirteen".