1369716820 has 24 divisors (see below), whose sum is σ = 2879420544. Its totient is φ = 547312416.

The previous prime is 1369716811. The next prime is 1369716823. The reversal of 1369716820 is 286179631.

It is a super-2 number, since 2×1369716820² = 3752248333981824800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369716823) 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, 16072 + ... + 54751.

It is an arithmetic number, because the mean of its divisors is an integer number (119975856).

Almost surely, 2^1369716820 is an apocalyptic number.

1369716820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1369716820 is an abundant number, since it is smaller than the sum of its proper divisors (1509703724).

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

1369716820 is a wasteful number, since it uses less digits than its factorization.

1369716820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71799 (or 71797 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1369716820 is about 37009.6854890716. The cubic root of 1369716820 is about 1110.5640128000.

The spelling of 1369716820 in words is "one billion, three hundred sixty-nine million, seven hundred sixteen thousand, eight hundred twenty".