1018977948 has 24 divisors (see below), whose sum is σ = 2641794960. Its totient is φ = 339659280.

The previous prime is 1018977929. The next prime is 1018977979. The reversal of 1018977948 is 8497798101.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1018977894 and 1018977903.

It is a congruent number.

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, 4717383 + ... + 4717598.

It is an arithmetic number, because the mean of its divisors is an integer number (110074790).

Almost surely, 2^1018977948 is an apocalyptic number.

1018977948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1018977948 is an abundant number, since it is smaller than the sum of its proper divisors (1622817012).

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

1018977948 is a wasteful number, since it uses less digits than its factorization.

1018977948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9434994 (or 9434986 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The square root of 1018977948 is about 31921.4339903457. The cubic root of 1018977948 is about 1006.2863812676.

The spelling of 1018977948 in words is "one billion, eighteen million, nine hundred seventy-seven thousand, nine hundred forty-eight".