1620957414 has 16 divisors (see below), whose sum is σ = 3242329200. Its totient is φ = 540250080.

The previous prime is 1620957379. The next prime is 1620957433. The reversal of 1620957414 is 4147590261.

It is a Curzon number.

It is a congruent number.

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, 60612 + ... + 83160.

It is an arithmetic number, because the mean of its divisors is an integer number (202645575).

Almost surely, 2^1620957414 is an apocalyptic number.

1620957414 is an abundant number, since it is smaller than the sum of its proper divisors (1621371786).

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

1620957414 is a wasteful number, since it uses less digits than its factorization.

1620957414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34535.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1620957414 is about 40261.1154092879. The cubic root of 1620957414 is about 1174.6916140142.

The spelling of 1620957414 in words is "one billion, six hundred twenty million, nine hundred fifty-seven thousand, four hundred fourteen".