38400018582 has 16 divisors (see below), whose sum is σ = 76831580592. Its totient is φ = 12794748960.

The previous prime is 38400018581. The next prime is 38400018637. The reversal of 38400018582 is 28581000483.

It is a super-2 number, since 2×38400018582² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38400018582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38400018581) 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, 1298469 + ... + 1327712.

It is an arithmetic number, because the mean of its divisors is an integer number (4801973787).

Almost surely, 2^38400018582 is an apocalyptic number.

38400018582 is an abundant number, since it is smaller than the sum of its proper divisors (38431562010).

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

38400018582 is a wasteful number, since it uses less digits than its factorization.

38400018582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628623.

The product of its (nonzero) digits is 61440, while the sum is 39.

The spelling of 38400018582 in words is "thirty-eight billion, four hundred million, eighteen thousand, five hundred eighty-two".