1656150997 has 2 divisors, whose sum is σ = 1656150998. Its totient is φ = 1656150996.

The previous prime is 1656150953. The next prime is 1656151039. The reversal of 1656150997 is 7990516561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1484252676 + 171898321 = 38526^2 + 13111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1656150997 - 2⁷ = 1656150869 is a prime.

It is a super-2 number, since 2×1656150997² = 5485672249728188018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1656150997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1656150907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828075498 + 828075499.

It is an arithmetic number, because the mean of its divisors is an integer number (828075499).

Almost surely, 2^1656150997 is an apocalyptic number.

It is an amenable number.

1656150997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656150997 is an equidigital number, since it uses as much as digits as its factorization.

1656150997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 49.

The square root of 1656150997 is about 40695.8351308829. The cubic root of 1656150997 is about 1183.1322977841.

The spelling of 1656150997 in words is "one billion, six hundred fifty-six million, one hundred fifty thousand, nine hundred ninety-seven".