1620872150 has 12 divisors (see below), whose sum is σ = 3014822292. Its totient is φ = 648348840.

The previous prime is 1620872137. The next prime is 1620872173. The reversal of 1620872150 is 512780261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16208672 + ... + 16208771.

It is an arithmetic number, because the mean of its divisors is an integer number (251235191).

Almost surely, 2^1620872150 is an apocalyptic number.

1620872150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1620872150 is a deficient number, since it is larger than the sum of its proper divisors (1393950142).

1620872150 is a wasteful number, since it uses less digits than its factorization.

1620872150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32417455 (or 32417450 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1620872150 is about 40260.0565076603. The cubic root of 1620872150 is about 1174.6710169973.

The spelling of 1620872150 in words is "one billion, six hundred twenty million, eight hundred seventy-two thousand, one hundred fifty".