1381879554 has 32 divisors (see below), whose sum is σ = 3021373440. Its totient is φ = 417867600.

The previous prime is 1381879531. The next prime is 1381879567. The reversal of 1381879554 is 4559781831.

It is a super-2 number, since 2×1381879554² = 3819182203526477832, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1381879497 and 1381879506.

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, 9759 + ... + 53469.

It is an arithmetic number, because the mean of its divisors is an integer number (94417920).

Almost surely, 2^1381879554 is an apocalyptic number.

1381879554 is an abundant number, since it is smaller than the sum of its proper divisors (1639493886).

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

1381879554 is a wasteful number, since it uses less digits than its factorization.

1381879554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44206.

The product of its digits is 1209600, while the sum is 51.

The square root of 1381879554 is about 37173.6405803898. The cubic root of 1381879554 is about 1113.8415052778.

It can be divided in two parts, 138187 and 9554, that added together give a palindrome (147741).

The spelling of 1381879554 in words is "one billion, three hundred eighty-one million, eight hundred seventy-nine thousand, five hundred fifty-four".