1375198449 has 8 divisors (see below), whose sum is σ = 1836082080. Its totient is φ = 915556896.

The previous prime is 1375198439. The next prime is 1375198463. The reversal of 1375198449 is 9448915731.

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

It is not a de Polignac number, because 1375198449 - 2⁵ = 1375198417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1375198439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307932 + ... + 312365.

It is an arithmetic number, because the mean of its divisors is an integer number (229510260).

Almost surely, 2^1375198449 is an apocalyptic number.

It is an amenable number.

1375198449 is a deficient number, since it is larger than the sum of its proper divisors (460883631).

1375198449 is an equidigital number, since it uses as much as digits as its factorization.

1375198449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621039.

The product of its digits is 1088640, while the sum is 51.

The square root of 1375198449 is about 37083.6682247051. The cubic root of 1375198449 is about 1112.0435392718.

The spelling of 1375198449 in words is "one billion, three hundred seventy-five million, one hundred ninety-eight thousand, four hundred forty-nine".