1381493266 has 8 divisors (see below), whose sum is σ = 2072398464. Its totient is φ = 690693780.

The previous prime is 1381493227. The next prime is 1381493299. The reversal of 1381493266 is 6623941831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32731 + ... + 61921.

It is an arithmetic number, because the mean of its divisors is an integer number (259049808).

Almost surely, 2^1381493266 is an apocalyptic number.

1381493266 is a deficient number, since it is larger than the sum of its proper divisors (690905198).

1381493266 is a wasteful number, since it uses less digits than its factorization.

1381493266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52856.

The product of its digits is 186624, while the sum is 43.

The square root of 1381493266 is about 37168.4444926069. Note that the first 4 decimals coincide. The cubic root of 1381493266 is about 1113.7377085554.

The spelling of 1381493266 in words is "one billion, three hundred eighty-one million, four hundred ninety-three thousand, two hundred sixty-six".