1610656501 has 2 divisors, whose sum is σ = 1610656502. Its totient is φ = 1610656500.

The previous prime is 1610656493. The next prime is 1610656507. The reversal of 1610656501 is 1056560161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1490732100 + 119924401 = 38610^2 + 10951^2 .

It is a cyclic number.

It is not a de Polignac number, because 1610656501 - 2³ = 1610656493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1610656507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805328250 + 805328251.

It is an arithmetic number, because the mean of its divisors is an integer number (805328251).

Almost surely, 2^1610656501 is an apocalyptic number.

It is an amenable number.

1610656501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1610656501 is an equidigital number, since it uses as much as digits as its factorization.

1610656501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1610656501 is about 40132.9851992099. The cubic root of 1610656501 is about 1172.1980015174.

The spelling of 1610656501 in words is "one billion, six hundred ten million, six hundred fifty-six thousand, five hundred one".