1878745940 has 24 divisors (see below), whose sum is σ = 3947553792. Its totient is φ = 751081760.

The previous prime is 1878745931. The next prime is 1878745943. The reversal of 1878745940 is 495478781.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878745943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12317 + ... + 62523.

It is an arithmetic number, because the mean of its divisors is an integer number (164481408).

Almost surely, 2^1878745940 is an apocalyptic number.

1878745940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1878745940 is an abundant number, since it is smaller than the sum of its proper divisors (2068807852).

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

1878745940 is a wasteful number, since it uses less digits than its factorization.

1878745940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52087 (or 52085 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 53.

The square root of 1878745940 is about 43344.5029963431. The cubic root of 1878745940 is about 1233.9266715732.

The spelling of 1878745940 in words is "one billion, eight hundred seventy-eight million, seven hundred forty-five thousand, nine hundred forty".