1662501460 has 12 divisors (see below), whose sum is σ = 3491253108. Its totient is φ = 665000576.

The previous prime is 1662501457. The next prime is 1662501461. The reversal of 1662501460 is 641052661.

It can be written as a sum of positive squares in 2 ways, for example, as 1237069584 + 425431876 = 35172^2 + 20626^2 .

It is a super-2 number, since 2×1662501460² = 5527822209004263200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662501461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41562517 + ... + 41562556.

It is an arithmetic number, because the mean of its divisors is an integer number (290937759).

Almost surely, 2^1662501460 is an apocalyptic number.

1662501460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1662501460 is an abundant number, since it is smaller than the sum of its proper divisors (1828751648).

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

1662501460 is a wasteful number, since it uses less digits than its factorization.

1662501460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83125082 (or 83125080 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1662501460 is about 40773.7839794150. The cubic root of 1662501460 is about 1184.6425978608.

The spelling of 1662501460 in words is "one billion, six hundred sixty-two million, five hundred one thousand, four hundred sixty".