1381990995 has 96 divisors (see below), whose sum is σ = 3116565504. Its totient is φ = 549331200.

The previous prime is 1381990957. The next prime is 1381990999. The reversal of 1381990995 is 5990991831.

It is not a de Polignac number, because 1381990995 - 2⁹ = 1381990483 is a prime.

It is a super-2 number, since 2×1381990995² = 3819798220522180050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1381990999) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 71025 + ... + 88365.

It is an arithmetic number, because the mean of its divisors is an integer number (32464224).

Almost surely, 2^1381990995 is an apocalyptic number.

1381990995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1381990995 is an abundant number, since it is smaller than the sum of its proper divisors (1734574509).

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

1381990995 is a wasteful number, since it uses less digits than its factorization.

1381990995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17393 (or 17390 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 54.

The square root of 1381990995 is about 37175.1394751923. The cubic root of 1381990995 is about 1113.8714462072.

The spelling of 1381990995 in words is "one billion, three hundred eighty-one million, nine hundred ninety thousand, nine hundred ninety-five".