1381571466 has 24 divisors (see below), whose sum is σ = 3037175232. Its totient is φ = 418657800.

The previous prime is 1381571459. The next prime is 1381571539. The reversal of 1381571466 is 6641751831.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 950770 + ... + 952221.

It is an arithmetic number, because the mean of its divisors is an integer number (126548968).

Almost surely, 2^1381571466 is an apocalyptic number.

1381571466 is an abundant number, since it is smaller than the sum of its proper divisors (1655603766).

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

1381571466 is a wasteful number, since it uses less digits than its factorization.

1381571466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903018 (or 1903007 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 1381571466 is about 37169.4964453381. The cubic root of 1381571466 is about 1113.7587226874.

The spelling of 1381571466 in words is "one billion, three hundred eighty-one million, five hundred seventy-one thousand, four hundred sixty-six".