1381979348 has 6 divisors (see below), whose sum is σ = 2418463866. Its totient is φ = 690989672.

The previous prime is 1381979327. The next prime is 1381979371. The reversal of 1381979348 is 8439791831.

It can be written as a sum of positive squares in only one way, i.e., 1085175364 + 296803984 = 32942^2 + 17228^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1381979348.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172747415 + ... + 172747422.

It is an arithmetic number, because the mean of its divisors is an integer number (403077311).

Almost surely, 2^1381979348 is an apocalyptic number.

It is an amenable number.

1381979348 is a deficient number, since it is larger than the sum of its proper divisors (1036484518).

1381979348 is a wasteful number, since it uses less digits than its factorization.

1381979348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345494841 (or 345494839 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 1381979348 is about 37174.9828244748. The cubic root of 1381979348 is about 1113.8683170751.

The spelling of 1381979348 in words is "one billion, three hundred eighty-one million, nine hundred seventy-nine thousand, three hundred forty-eight".