1642610164 has 12 divisors (see below), whose sum is σ = 3095688484. Its totient is φ = 758127744.

The previous prime is 1642610161. The next prime is 1642610201. The reversal of 1642610164 is 4610162461.

It can be written as a sum of positive squares in 2 ways, for example, as 82992100 + 1559618064 = 9110^2 + 39492^2 .

It is a super-2 number, since 2×1642610164² = 5396336301752213792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642610161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15794277 + ... + 15794380.

Almost surely, 2^1642610164 is an apocalyptic number.

It is an amenable number.

1642610164 is a deficient number, since it is larger than the sum of its proper divisors (1453078320).

1642610164 is a wasteful number, since it uses less digits than its factorization.

1642610164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31588674 (or 31588672 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1642610164 is about 40529.1273530531. The cubic root of 1642610164 is about 1179.8990060073.

The spelling of 1642610164 in words is "one billion, six hundred forty-two million, six hundred ten thousand, one hundred sixty-four".