1620957354 has 8 divisors (see below), whose sum is σ = 3241914720. Its totient is φ = 540319116.

The previous prime is 1620957343. The next prime is 1620957379. The reversal of 1620957354 is 4537590261.

It is a sphenic number, since it is the product of 3 distinct primes.

1620957354 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135079774 + ... + 135079785.

It is an arithmetic number, because the mean of its divisors is an integer number (405239340).

Almost surely, 2^1620957354 is an apocalyptic number.

1620957354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1620957354 is a wasteful number, since it uses less digits than its factorization.

1620957354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270159564.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 1620957354 is about 40261.1146641521. The cubic root of 1620957354 is about 1174.6915995204.

The spelling of 1620957354 in words is "one billion, six hundred twenty million, nine hundred fifty-seven thousand, three hundred fifty-four".