3155645897 has 2 divisors, whose sum is σ = 3155645898. Its totient is φ = 3155645896.

The previous prime is 3155645891. The next prime is 3155645929. The reversal of 3155645897 is 7985465513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1928615056 + 1227030841 = 43916^2 + 35029^2 .

It is a cyclic number.

It is not a de Polignac number, because 3155645897 - 2⁶ = 3155645833 is a prime.

It is not a weakly prime, because it can be changed into another prime (3155645891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1577822948 + 1577822949.

It is an arithmetic number, because the mean of its divisors is an integer number (1577822949).

Almost surely, 2^3155645897 is an apocalyptic number.

It is an amenable number.

3155645897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3155645897 is an equidigital number, since it uses as much as digits as its factorization.

3155645897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 53.

The square root of 3155645897 is about 56175.1359321898. The cubic root of 3155645897 is about 1466.7724855871.

The spelling of 3155645897 in words is "three billion, one hundred fifty-five million, six hundred forty-five thousand, eight hundred ninety-seven".