1018691072 has 40 divisors (see below), whose sum is σ = 2326171056. Its totient is φ = 436580352.

The previous prime is 1018691059. The next prime is 1018691081. The reversal of 1018691072 is 2701968101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138533 + ... + 145700.

Almost surely, 2^1018691072 is an apocalyptic number.

It is an amenable number.

1018691072 is an abundant number, since it is smaller than the sum of its proper divisors (1307479984).

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

1018691072 is an frugal number, since it uses more digits than its factorization.

1018691072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284258 (or 284242 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 1018691072 is about 31916.9402042238. The cubic root of 1018691072 is about 1006.1919381027.

The spelling of 1018691072 in words is "one billion, eighteen million, six hundred ninety-one thousand, seventy-two".