1381918254 has 32 divisors (see below), whose sum is σ = 2840969376. Its totient is φ = 447805440.

The previous prime is 1381918247. The next prime is 1381918267. The reversal of 1381918254 is 4528191831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380254 + ... + 383870.

It is an arithmetic number, because the mean of its divisors is an integer number (88780293).

Almost surely, 2^1381918254 is an apocalyptic number.

1381918254 is an abundant number, since it is smaller than the sum of its proper divisors (1459051122).

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

1381918254 is a wasteful number, since it uses less digits than its factorization.

1381918254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5380.

The product of its digits is 69120, while the sum is 42.

The square root of 1381918254 is about 37174.1611068764. The cubic root of 1381918254 is about 1113.8519030156.

The spelling of 1381918254 in words is "one billion, three hundred eighty-one million, nine hundred eighteen thousand, two hundred fifty-four".