1642464165 has 32 divisors (see below), whose sum is σ = 2724249600. Its totient is φ = 844119360.

The previous prime is 1642464143. The next prime is 1642464191. The reversal of 1642464165 is 5614642461.

It is not a de Polignac number, because 1642464165 - 2⁸ = 1642463909 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103746 + ... + 118524.

It is an arithmetic number, because the mean of its divisors is an integer number (85132800).

Almost surely, 2^1642464165 is an apocalyptic number.

1642464165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1642464165 is a deficient number, since it is larger than the sum of its proper divisors (1081785435).

1642464165 is a wasteful number, since it uses less digits than its factorization.

1642464165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15057.

The product of its digits is 138240, while the sum is 39.

The square root of 1642464165 is about 40527.3261516227. The cubic root of 1642464165 is about 1179.8640475851.

The spelling of 1642464165 in words is "one billion, six hundred forty-two million, four hundred sixty-four thousand, one hundred sixty-five".