1375198438 has 16 divisors (see below), whose sum is σ = 2082459456. Its totient is φ = 681065320.

The previous prime is 1375198421. The next prime is 1375198439. The reversal of 1375198438 is 8348915731.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1375198391 and 1375198400.

It is a congruent number.

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, 142845 + ... + 152167.

It is an arithmetic number, because the mean of its divisors is an integer number (130153716).

Almost surely, 2^1375198438 is an apocalyptic number.

1375198438 is a deficient number, since it is larger than the sum of its proper divisors (707261018).

1375198438 is a wasteful number, since it uses less digits than its factorization.

1375198438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10019.

The product of its digits is 725760, while the sum is 49.

The square root of 1375198438 is about 37083.6680763918. The cubic root of 1375198438 is about 1112.0435363068.

The spelling of 1375198438 in words is "one billion, three hundred seventy-five million, one hundred ninety-eight thousand, four hundred thirty-eight".