1664404053 has 32 divisors (see below), whose sum is σ = 2462275200. Its totient is φ = 993565440.

The previous prime is 1664404037. The next prime is 1664404069. The reversal of 1664404053 is 3504044661.

It is an interprime number because it is at equal distance from previous prime (1664404037) and next prime (1664404069).

It is not a de Polignac number, because 1664404053 - 2⁴ = 1664404037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664404003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246543 + ... + 253203.

It is an arithmetic number, because the mean of its divisors is an integer number (76946100).

Almost surely, 2^1664404053 is an apocalyptic number.

1664404053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1664404053 is a deficient number, since it is larger than the sum of its proper divisors (797871147).

1664404053 is a wasteful number, since it uses less digits than its factorization.

1664404053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6869.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 1664404053 is about 40797.1083901788. The cubic root of 1664404053 is about 1185.0943334969.

The spelling of 1664404053 in words is "one billion, six hundred sixty-four million, four hundred four thousand, fifty-three".