1610431655 has 16 divisors (see below), whose sum is σ = 2209806144. Its totient is φ = 1103688960.

The previous prime is 1610431651. The next prime is 1610431663. The reversal of 1610431655 is 5561340161.

It is not a de Polignac number, because 1610431655 - 2² = 1610431651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1610431651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57395 + ... + 80715.

It is an arithmetic number, because the mean of its divisors is an integer number (138112884).

Almost surely, 2^1610431655 is an apocalyptic number.

1610431655 is a deficient number, since it is larger than the sum of its proper divisors (599374489).

1610431655 is a wasteful number, since it uses less digits than its factorization.

1610431655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25306.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1610431655 is about 40130.1838395988. The cubic root of 1610431655 is about 1172.1434530984.

The spelling of 1610431655 in words is "one billion, six hundred ten million, four hundred thirty-one thousand, six hundred fifty-five".