1620919118 has 48 divisors (see below), whose sum is σ = 3082801680. Its totient is φ = 633475584.

The previous prime is 1620919081. The next prime is 1620919129. The reversal of 1620919118 is 8119190261.

It is a super-3 number, since 3×1620919118³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98078 + ... + 113406.

It is an arithmetic number, because the mean of its divisors is an integer number (64225035).

Almost surely, 2^1620919118 is an apocalyptic number.

1620919118 is a deficient number, since it is larger than the sum of its proper divisors (1461882562).

1620919118 is a wasteful number, since it uses less digits than its factorization.

1620919118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15441 (or 15434 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 38.

The square root of 1620919118 is about 40260.6398111108. The cubic root of 1620919118 is about 1174.6823630320.

The spelling of 1620919118 in words is "one billion, six hundred twenty million, nine hundred nineteen thousand, one hundred eighteen".