1620158460 has 48 divisors (see below), whose sum is σ = 4647095712. Its totient is φ = 421504000.

The previous prime is 1620158459. The next prime is 1620158489. The reversal of 1620158460 is 648510261.

1620158460 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 326841 + ... + 331760.

It is an arithmetic number, because the mean of its divisors is an integer number (96814494).

Almost surely, 2^1620158460 is an apocalyptic number.

1620158460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1620158460 is an abundant number, since it is smaller than the sum of its proper divisors (3026937252).

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

1620158460 is a wasteful number, since it uses less digits than its factorization.

1620158460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658654 (or 658652 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1620158460 is about 40251.1920320380. The cubic root of 1620158460 is about 1174.4985843075.

The spelling of 1620158460 in words is "one billion, six hundred twenty million, one hundred fifty-eight thousand, four hundred sixty".