1626745020 has 48 divisors (see below), whose sum is σ = 4558313760. Its totient is φ = 433472256.

The previous prime is 1626745013. The next prime is 1626745027. The reversal of 1626745020 is 205476261.

It is an interprime number because it is at equal distance from previous prime (1626745013) and next prime (1626745027).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1626745027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76254 + ... + 95226.

It is an arithmetic number, because the mean of its divisors is an integer number (94964870).

Almost surely, 2^1626745020 is an apocalyptic number.

1626745020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1626745020 is an abundant number, since it is smaller than the sum of its proper divisors (2931568740).

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

1626745020 is a wasteful number, since it uses less digits than its factorization.

1626745020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20414 (or 20412 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 1626745020 is about 40332.9272431347. The cubic root of 1626745020 is about 1176.0880267534.

The spelling of 1626745020 in words is "one billion, six hundred twenty-six million, seven hundred forty-five thousand, twenty".