1628640502 has 4 divisors (see below), whose sum is σ = 2442960756. Its totient is φ = 814320250.

The previous prime is 1628640491. The next prime is 1628640527. The reversal of 1628640502 is 2050468261.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407160124 + ... + 407160127.

It is an arithmetic number, because the mean of its divisors is an integer number (610740189).

Almost surely, 2^1628640502 is an apocalyptic number.

1628640502 is a deficient number, since it is larger than the sum of its proper divisors (814320254).

1628640502 is an equidigital number, since it uses as much as digits as its factorization.

1628640502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814320253.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1628640502 is about 40356.4183495017. The cubic root of 1628640502 is about 1176.5446417271.

The spelling of 1628640502 in words is "one billion, six hundred twenty-eight million, six hundred forty thousand, five hundred two".