1038198451 has 4 divisors (see below), whose sum is σ = 1038272400. Its totient is φ = 1038124504.

The previous prime is 1038198391. The next prime is 1038198479. The reversal of 1038198451 is 1548918301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1038198451 - 2¹¹ = 1038196403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1038198251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8716 + ... + 46393.

It is an arithmetic number, because the mean of its divisors is an integer number (259568100).

Almost surely, 2^1038198451 is an apocalyptic number.

1038198451 is a deficient number, since it is larger than the sum of its proper divisors (73949).

1038198451 is an equidigital number, since it uses as much as digits as its factorization.

1038198451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73948.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 1038198451 is about 32221.0870549086. The cubic root of 1038198451 is about 1012.5740476455.

The spelling of 1038198451 in words is "one billion, thirty-eight million, one hundred ninety-eight thousand, four hundred fifty-one".