1375198451 has 12 divisors (see below), whose sum is σ = 1568285880. Its totient is φ = 1195819680.

The previous prime is 1375198439. The next prime is 1375198463. The reversal of 1375198451 is 1548915731.

It is an interprime number because it is at equal distance from previous prime (1375198439) and next prime (1375198463).

It is a de Polignac number, because none of the positive numbers 2^k-1375198451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375198411) 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, 112346 + ... + 123983.

It is an arithmetic number, because the mean of its divisors is an integer number (130690490).

Almost surely, 2^1375198451 is an apocalyptic number.

1375198451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1375198451 is a deficient number, since it is larger than the sum of its proper divisors (193087429).

1375198451 is a wasteful number, since it uses less digits than its factorization.

1375198451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236386 (or 236363 counting only the distinct ones).

The product of its digits is 151200, while the sum is 44.

The square root of 1375198451 is about 37083.6682516711. The cubic root of 1375198451 is about 1112.0435398109.

The spelling of 1375198451 in words is "one billion, three hundred seventy-five million, one hundred ninety-eight thousand, four hundred fifty-one".