1610406557 has 2 divisors, whose sum is σ = 1610406558. Its totient is φ = 1610406556.

The previous prime is 1610406521. The next prime is 1610406559. The reversal of 1610406557 is 7556040161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1601680441 + 8726116 = 40021^2 + 2954^2 .

It is a cyclic number.

It is not a de Polignac number, because 1610406557 - 2¹⁸ = 1610144413 is a prime.

Together with 1610406559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1610406559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805203278 + 805203279.

It is an arithmetic number, because the mean of its divisors is an integer number (805203279).

Almost surely, 2^1610406557 is an apocalyptic number.

It is an amenable number.

1610406557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1610406557 is an equidigital number, since it uses as much as digits as its factorization.

1610406557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1610406557 is about 40129.8711311163. The cubic root of 1610406557 is about 1172.1373639216.

The spelling of 1610406557 in words is "one billion, six hundred ten million, four hundred six thousand, five hundred fifty-seven".