1620863034 has 32 divisors (see below), whose sum is σ = 3706093440. Its totient is φ = 462945792.

The previous prime is 1620863021. The next prime is 1620863059. The reversal of 1620863034 is 4303680261.

It is a junction number, because it is equal to n+sod(n) for n = 1620862986 and 1620863004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180802 + ... + 189554.

It is an arithmetic number, because the mean of its divisors is an integer number (115815420).

Almost surely, 2^1620863034 is an apocalyptic number.

1620863034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1620863034 is an abundant number, since it is smaller than the sum of its proper divisors (2085230406).

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

1620863034 is a wasteful number, since it uses less digits than its factorization.

1620863034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13174.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1620863034 is about 40259.9432935517. The cubic root of 1620863034 is about 1174.6688148246.

The spelling of 1620863034 in words is "one billion, six hundred twenty million, eight hundred sixty-three thousand, thirty-four".