1610941553 has 4 divisors (see below), whose sum is σ = 1734860148. Its totient is φ = 1487022960.

The previous prime is 1610941523. The next prime is 1610941613. The reversal of 1610941553 is 3551490161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3551490161 = 103 ⋅34480487.

It can be written as a sum of positive squares in 2 ways, for example, as 71791729 + 1539149824 = 8473^2 + 39232^2 .

It is a cyclic number.

It is not a de Polignac number, because 1610941553 - 2²⁸ = 1342506097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1610941523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61959278 + ... + 61959303.

It is an arithmetic number, because the mean of its divisors is an integer number (433715037).

Almost surely, 2^1610941553 is an apocalyptic number.

1610941553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1610941553 is a deficient number, since it is larger than the sum of its proper divisors (123918595).

1610941553 is a wasteful number, since it uses less digits than its factorization.

1610941553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123918594.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 1610941553 is about 40136.5363851940. The cubic root of 1610941553 is about 1172.2671488236.

The spelling of 1610941553 in words is "one billion, six hundred ten million, nine hundred forty-one thousand, five hundred fifty-three".