1381553930 has 8 divisors (see below), whose sum is σ = 2486797092. Its totient is φ = 552621568.

The previous prime is 1381553911. The next prime is 1381553941. The reversal of 1381553930 is 393551831.

It can be written as a sum of positive squares in 2 ways, for example, as 1341244129 + 40309801 = 36623^2 + 6349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1381553930² = 3817382522996889800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69077687 + ... + 69077706.

Almost surely, 2^1381553930 is an apocalyptic number.

1381553930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381553930 is a deficient number, since it is larger than the sum of its proper divisors (1105243162).

1381553930 is a wasteful number, since it uses less digits than its factorization.

1381553930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138155400.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 1381553930 is about 37169.2605522359. The cubic root of 1381553930 is about 1113.7540104313.

The spelling of 1381553930 in words is "one billion, three hundred eighty-one million, five hundred fifty-three thousand, nine hundred thirty".