1381192450 has 24 divisors (see below), whose sum is σ = 2802566160. Its totient is φ = 502251600.

The previous prime is 1381192447. The next prime is 1381192451. The reversal of 1381192450 is 542911831.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1381192451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1255080 + ... + 1256179.

It is an arithmetic number, because the mean of its divisors is an integer number (116773590).

Almost surely, 2^1381192450 is an apocalyptic number.

1381192450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1381192450 is an abundant number, since it is smaller than the sum of its proper divisors (1421373710).

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

1381192450 is a wasteful number, since it uses less digits than its factorization.

1381192450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511282 (or 2511277 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1381192450 is about 37164.3976138454. The cubic root of 1381192450 is about 1113.6568650095.

The spelling of 1381192450 in words is "one billion, three hundred eighty-one million, one hundred ninety-two thousand, four hundred fifty".