1038194640 has 120 divisors (see below), whose sum is σ = 3984709248. Its totient is φ = 237300480.

The previous prime is 1038194639. The next prime is 1038194657. The reversal of 1038194640 is 464918301.

1038194640 is a `hidden beast` number, since 1 + 0 + 3 + 8 + 1 + 9 + 4 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×1038194640² = 2155696221049459200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1038194595 and 1038194604.

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 23 ways as a sum of consecutive naturals, for example, 97956 + ... + 108035.

Almost surely, 2^1038194640 is an apocalyptic number.

1038194640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1038194640 is an abundant number, since it is smaller than the sum of its proper divisors (2946514608).

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

1038194640 is a wasteful number, since it uses less digits than its factorization.

1038194640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206017 (or 206008 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1038194640 is about 32221.0279165641. The cubic root of 1038194640 is about 1012.5728086645.

The spelling of 1038194640 in words is "one billion, thirty-eight million, one hundred ninety-four thousand, six hundred forty".