1664162530 has 16 divisors (see below), whose sum is σ = 3068554104. Its totient is φ = 649429120.

The previous prime is 1664162509. The next prime is 1664162551. The reversal of 1664162530 is 352614661.

It is an interprime number because it is at equal distance from previous prime (1664162509) and next prime (1664162551).

It can be written as a sum of positive squares in 4 ways, for example, as 745890721 + 918271809 = 27311^2 + 30303^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2029057 + ... + 2029876.

Almost surely, 2^1664162530 is an apocalyptic number.

1664162530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1664162530 is a deficient number, since it is larger than the sum of its proper divisors (1404391574).

1664162530 is a wasteful number, since it uses less digits than its factorization.

1664162530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058981.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1664162530 is about 40794.1482323139. The cubic root of 1664162530 is about 1185.0370073958.

The spelling of 1664162530 in words is "one billion, six hundred sixty-four million, one hundred sixty-two thousand, five hundred thirty".