1658164494 has 32 divisors (see below), whose sum is σ = 3920785920. Its totient is φ = 457424352.

The previous prime is 1658164489. The next prime is 1658164537. The reversal of 1658164494 is 4944618561.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679474 + ... + 681909.

It is an arithmetic number, because the mean of its divisors is an integer number (122524560).

Almost surely, 2^1658164494 is an apocalyptic number.

1658164494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1658164494 is an abundant number, since it is smaller than the sum of its proper divisors (2262621426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1658164494 is a wasteful number, since it uses less digits than its factorization.

1658164494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361424.

The product of its digits is 829440, while the sum is 48.

The square root of 1658164494 is about 40720.5659832965. The cubic root of 1658164494 is about 1183.6115754532.

The spelling of 1658164494 in words is "one billion, six hundred fifty-eight million, one hundred sixty-four thousand, four hundred ninety-four".