1628937340 has 48 divisors (see below), whose sum is σ = 3473527680. Its totient is φ = 641571840.

The previous prime is 1628937307. The next prime is 1628937341. The reversal of 1628937340 is 437398261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628937341) 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, 682950 + ... + 685330.

It is an arithmetic number, because the mean of its divisors is an integer number (72365160).

Almost surely, 2^1628937340 is an apocalyptic number.

1628937340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1628937340 is an abundant number, since it is smaller than the sum of its proper divisors (1844590340).

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

1628937340 is a wasteful number, since it uses less digits than its factorization.

1628937340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902 (or 2900 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 1628937340 is about 40360.0958869029. The cubic root of 1628937340 is about 1176.6161168710.

The spelling of 1628937340 in words is "one billion, six hundred twenty-eight million, nine hundred thirty-seven thousand, three hundred forty".