1381377072 has 40 divisors (see below), whose sum is σ = 3569999680. Its totient is φ = 460272960.

The previous prime is 1381377071. The next prime is 1381377077. The reversal of 1381377072 is 2707731831.

It is a self number, because there is not a number n which added to its sum of digits gives 1381377072.

It is not an unprimeable number, because it can be changed into a prime (1381377071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167379 + ... + 175437.

It is an arithmetic number, because the mean of its divisors is an integer number (89249992).

Almost surely, 2^1381377072 is an apocalyptic number.

1381377072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1381377072 is an abundant number, since it is smaller than the sum of its proper divisors (2188622608).

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

1381377072 is a wasteful number, since it uses less digits than its factorization.

1381377072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11641 (or 11635 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 1381377072 is about 37166.8813865248. The cubic root of 1381377072 is about 1113.7064831003.

The spelling of 1381377072 in words is "one billion, three hundred eighty-one million, three hundred seventy-seven thousand, seventy-two".