3811389990 has 16 divisors (see below), whose sum is σ = 9147336048. Its totient is φ = 1016370656.

The previous prime is 3811389977. The next prime is 3811390003. The reversal of 3811389990 is 999831183.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3811389977) and next prime (3811390003).

It is a Curzon number.

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, 63523137 + ... + 63523196.

It is an arithmetic number, because the mean of its divisors is an integer number (571708503).

Almost surely, 2^3811389990 is an apocalyptic number.

3811389990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3811389990 is an abundant number, since it is smaller than the sum of its proper divisors (5335946058).

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

3811389990 is a wasteful number, since it uses less digits than its factorization.

3811389990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127046343.

The product of its (nonzero) digits is 419904, while the sum is 51.

The square root of 3811389990 is about 61736.4559235465. The cubic root of 3811389990 is about 1562.0483160755.

The spelling of 3811389990 in words is "three billion, eight hundred eleven million, three hundred eighty-nine thousand, nine hundred ninety".