1921465488 has 40 divisors (see below), whose sum is σ = 4968067936. Its totient is φ = 639936000.

The previous prime is 1921465457. The next prime is 1921465493. The reversal of 1921465488 is 8845641291.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 40983 + ... + 74313.

Almost surely, 2^1921465488 is an apocalyptic number.

It is an amenable number.

1921465488 is an abundant number, since it is smaller than the sum of its proper divisors (3046602448).

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

1921465488 is a wasteful number, since it uses less digits than its factorization.

1921465488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34543 (or 34537 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 1921465488 is about 43834.5239280638. The cubic root of 1921465488 is about 1243.2091450127.

The spelling of 1921465488 in words is "one billion, nine hundred twenty-one million, four hundred sixty-five thousand, four hundred eighty-eight".