1945993488 has 80 divisors (see below), whose sum is σ = 5079049920. Its totient is φ = 642007552.

The previous prime is 1945993403. The next prime is 1945993501. The reversal of 1945993488 is 8843995491.

It is a super-2 number, since 2×1945993488² = 7573781310676812288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2517070 + ... + 2517842.

It is an arithmetic number, because the mean of its divisors is an integer number (63488124).

Almost surely, 2^1945993488 is an apocalyptic number.

It is an amenable number.

1945993488 is an abundant number, since it is smaller than the sum of its proper divisors (3133056432).

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

1945993488 is a wasteful number, since it uses less digits than its factorization.

1945993488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256 (or 1250 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 60.

The square root of 1945993488 is about 44113.4161905423. The cubic root of 1945993488 is about 1248.4767553078.

The spelling of 1945993488 in words is "one billion, nine hundred forty-five million, nine hundred ninety-three thousand, four hundred eighty-eight".