1627666390 has 16 divisors (see below), whose sum is σ = 3348342432. Its totient is φ = 558057024.

The previous prime is 1627666373. The next prime is 1627666399. The reversal of 1627666390 is 936667261.

It is a self number, because there is not a number n which added to its sum of digits gives 1627666390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1627666399) 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, 11626119 + ... + 11626258.

It is an arithmetic number, because the mean of its divisors is an integer number (209271402).

Almost surely, 2^1627666390 is an apocalyptic number.

1627666390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1627666390 is an abundant number, since it is smaller than the sum of its proper divisors (1720676042).

1627666390 is a wasteful number, since it uses less digits than its factorization.

1627666390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23252391.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 1627666390 is about 40344.3476834116. The cubic root of 1627666390 is about 1176.3100258363.

The spelling of 1627666390 in words is "one billion, six hundred twenty-seven million, six hundred sixty-six thousand, three hundred ninety".