10198621438 has 8 divisors (see below), whose sum is σ = 15298418520. Its totient is φ = 5099148600.

The previous prime is 10198621421. The next prime is 10198621441. The reversal of 10198621438 is 83412689101.

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

It is a super-3 number, since 3×10198621438³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10198621394 and 10198621403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25693 + ... + 145111.

It is an arithmetic number, because the mean of its divisors is an integer number (1912302315).

Almost surely, 2^10198621438 is an apocalyptic number.

10198621438 is a deficient number, since it is larger than the sum of its proper divisors (5099797082).

10198621438 is a wasteful number, since it uses less digits than its factorization.

10198621438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162122.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 10198621438 in words is "ten billion, one hundred ninety-eight million, six hundred twenty-one thousand, four hundred thirty-eight".