1351252820 has 48 divisors (see below), whose sum is σ = 3068513280. Its totient is φ = 497877504.

The previous prime is 1351252789. The next prime is 1351252823. The reversal of 1351252820 is 282521531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351252823) 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, 26300 + ... + 58259.

It is an arithmetic number, because the mean of its divisors is an integer number (63927360).

Almost surely, 2^1351252820 is an apocalyptic number.

1351252820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351252820 is an abundant number, since it is smaller than the sum of its proper divisors (1717260460).

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

1351252820 is a wasteful number, since it uses less digits than its factorization.

1351252820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84632 (or 84630 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1351252820 is about 36759.3909089909. The cubic root of 1351252820 is about 1105.5512274698.

The spelling of 1351252820 in words is "one billion, three hundred fifty-one million, two hundred fifty-two thousand, eight hundred twenty".