1610435521 has 2 divisors, whose sum is σ = 1610435522. Its totient is φ = 1610435520.

The previous prime is 1610435479. The next prime is 1610435537. The reversal of 1610435521 is 1255340161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1206867600 + 403567921 = 34740^2 + 20089^2 .

It is a cyclic number.

It is not a de Polignac number, because 1610435521 - 2²⁷ = 1476217793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1610435521.

It is not a weakly prime, because it can be changed into another prime (1610436521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805217760 + 805217761.

It is an arithmetic number, because the mean of its divisors is an integer number (805217761).

Almost surely, 2^1610435521 is an apocalyptic number.

It is an amenable number.

1610435521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1610435521 is an equidigital number, since it uses as much as digits as its factorization.

1610435521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1610435521 is about 40130.2320078018. The cubic root of 1610435521 is about 1172.1443910463.

Adding to 1610435521 its reverse (1255340161), we get a palindrome (2865775682).

The spelling of 1610435521 in words is "one billion, six hundred ten million, four hundred thirty-five thousand, five hundred twenty-one".