1018972838 has 16 divisors (see below), whose sum is σ = 1649852736. Its totient is φ = 469203840.

The previous prime is 1018972781. The next prime is 1018972921. The reversal of 1018972838 is 8382798101.

It is a junction number, because it is equal to n+sod(n) for n = 1018972792 and 1018972801.

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, 33998 + ... + 56513.

It is an arithmetic number, because the mean of its divisors is an integer number (103115796).

Almost surely, 2^1018972838 is an apocalyptic number.

1018972838 is a deficient number, since it is larger than the sum of its proper divisors (630879898).

1018972838 is a wasteful number, since it uses less digits than its factorization.

1018972838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90959.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 1018972838 is about 31921.3539499815. The cubic root of 1018972838 is about 1006.2846991468.

The spelling of 1018972838 in words is "one billion, eighteen million, nine hundred seventy-two thousand, eight hundred thirty-eight".