1381517394 has 16 divisors (see below), whose sum is σ = 2769602880. Its totient is φ = 459411120.

The previous prime is 1381517381. The next prime is 1381517407. The reversal of 1381517394 is 4937151831.

It is an interprime number because it is at equal distance from previous prime (1381517381) and next prime (1381517407).

It is an unprimeable number.

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, 270934 + ... + 275985.

It is an arithmetic number, because the mean of its divisors is an integer number (173100180).

Almost surely, 2^1381517394 is an apocalyptic number.

1381517394 is an abundant number, since it is smaller than the sum of its proper divisors (1388085486).

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

1381517394 is a wasteful number, since it uses less digits than its factorization.

1381517394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547345.

The product of its digits is 90720, while the sum is 42.

The square root of 1381517394 is about 37168.7690675922. The cubic root of 1381517394 is about 1113.7441923865.

The spelling of 1381517394 in words is "one billion, three hundred eighty-one million, five hundred seventeen thousand, three hundred ninety-four".