2388749391 has 12 divisors (see below), whose sum is σ = 3943332432. Its totient is φ = 1364999616.

The previous prime is 2388749359. The next prime is 2388749413. The reversal of 2388749391 is 1939478832.

2388749391 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2388749391 - 2⁵ = 2388749359 is a prime.

It is a super-2 number, since 2×2388749391² = 11412247306005741762, which contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2388749351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18958266 + ... + 18958391.

It is an arithmetic number, because the mean of its divisors is an integer number (328611036).

Almost surely, 2^2388749391 is an apocalyptic number.

2388749391 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2388749391 is a deficient number, since it is larger than the sum of its proper divisors (1554583041).

2388749391 is a wasteful number, since it uses less digits than its factorization.

2388749391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37916670 (or 37916667 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 2388749391 is about 48874.8339229915. The cubic root of 2388749391 is about 1336.7705313398.

The spelling of 2388749391 in words is "two billion, three hundred eighty-eight million, seven hundred forty-nine thousand, three hundred ninety-one".