1381404970 has 32 divisors (see below), whose sum is σ = 2735021376. Its totient is φ = 502324240.

The previous prime is 1381404967. The next prime is 1381405007. The reversal of 1381404970 is 794041831.

1381404970 = T₇₀₆₀ + T₇₀₆₁ + ... + T₇₁₁₄.

It is a super-2 number, since 2×1381404970² = 3816559382281401800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38584 + ... + 65203.

It is an arithmetic number, because the mean of its divisors is an integer number (85469418).

Almost surely, 2^1381404970 is an apocalyptic number.

1381404970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381404970 is a deficient number, since it is larger than the sum of its proper divisors (1353616406).

1381404970 is a wasteful number, since it uses less digits than its factorization.

1381404970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103827 (or 103805 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1381404970 is about 37167.2566918787. The cubic root of 1381404970 is about 1113.7139804436.

It can be divided in two parts, 1381 and 404970, that added together give a triangular number (406351 = T₉₀₁).

The spelling of 1381404970 in words is "one billion, three hundred eighty-one million, four hundred four thousand, nine hundred seventy".