1477081978 has 16 divisors (see below), whose sum is σ = 2228325120. Its totient is φ = 734315616.

The previous prime is 1477081973. The next prime is 1477081979. The reversal of 1477081978 is 8791807741.

It is not an unprimeable number, because it can be changed into a prime (1477081973) 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, 487753 + ... + 490771.

It is an arithmetic number, because the mean of its divisors is an integer number (139270320).

Almost surely, 2^1477081978 is an apocalyptic number.

1477081978 is a deficient number, since it is larger than the sum of its proper divisors (751243142).

1477081978 is a wasteful number, since it uses less digits than its factorization.

1477081978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4341.

The product of its (nonzero) digits is 790272, while the sum is 52.

The square root of 1477081978 is about 38432.8242261742. The cubic root of 1477081978 is about 1138.8543887888.

The spelling of 1477081978 in words is "one billion, four hundred seventy-seven million, eighty-one thousand, nine hundred seventy-eight".