1381552166 has 16 divisors (see below), whose sum is σ = 2113353504. Its totient is φ = 677124864.

The previous prime is 1381552157. The next prime is 1381552171. The reversal of 1381552166 is 6612551831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124310 + ... + 134966.

It is an arithmetic number, because the mean of its divisors is an integer number (132084594).

Almost surely, 2^1381552166 is an apocalyptic number.

1381552166 is a deficient number, since it is larger than the sum of its proper divisors (731801338).

1381552166 is a wasteful number, since it uses less digits than its factorization.

1381552166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11935.

The product of its digits is 43200, while the sum is 38.

The square root of 1381552166 is about 37169.2368229427. The cubic root of 1381552166 is about 1113.7535364088.

The spelling of 1381552166 in words is "one billion, three hundred eighty-one million, five hundred fifty-two thousand, one hundred sixty-six".