1878157828 has 24 divisors (see below), whose sum is σ = 3610192320. Its totient is φ = 850972320.

The previous prime is 1878157819. The next prime is 1878157829. The reversal of 1878157828 is 8287518781.

It is not an unprimeable number, because it can be changed into a prime (1878157829) 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, 535483 + ... + 538978.

It is an arithmetic number, because the mean of its divisors is an integer number (150424680).

Almost surely, 2^1878157828 is an apocalyptic number.

It is an amenable number.

1878157828 is a deficient number, since it is larger than the sum of its proper divisors (1732034492).

1878157828 is a wasteful number, since it uses less digits than its factorization.

1878157828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074507 (or 1074505 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 55.

The square root of 1878157828 is about 43337.7183063437. The cubic root of 1878157828 is about 1233.7979043280.

The spelling of 1878157828 in words is "one billion, eight hundred seventy-eight million, one hundred fifty-seven thousand, eight hundred twenty-eight".