1656150985 has 8 divisors (see below), whose sum is σ = 2029666176. Its totient is φ = 1296730800.

The previous prime is 1656150953. The next prime is 1656150997. The reversal of 1656150985 is 5890516561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1656150985 - 2⁵ = 1656150953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3523491 + ... + 3523960.

It is an arithmetic number, because the mean of its divisors is an integer number (253708272).

Almost surely, 2^1656150985 is an apocalyptic number.

It is an amenable number.

1656150985 is a deficient number, since it is larger than the sum of its proper divisors (373515191).

1656150985 is an equidigital number, since it uses as much as digits as its factorization.

1656150985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7047503.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 1656150985 is about 40695.8349834476. The cubic root of 1656150985 is about 1183.1322949265.

The spelling of 1656150985 in words is "one billion, six hundred fifty-six million, one hundred fifty thousand, nine hundred eighty-five".