2198769638 has 16 divisors (see below), whose sum is σ = 3612062160. Its totient is φ = 997615776.

The previous prime is 2198769593. The next prime is 2198769649. The reversal of 2198769638 is 8369678912.

2198769638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715145 + ... + 718212.

It is an arithmetic number, because the mean of its divisors is an integer number (225753885).

Almost surely, 2^2198769638 is an apocalyptic number.

2198769638 is a deficient number, since it is larger than the sum of its proper divisors (1413292522).

2198769638 is a wasteful number, since it uses less digits than its factorization.

2198769638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433431.

The product of its digits is 7838208, while the sum is 59.

The square root of 2198769638 is about 46891.0400609754. The cubic root of 2198769638 is about 1300.3489473524.

The spelling of 2198769638 in words is "two billion, one hundred ninety-eight million, seven hundred sixty-nine thousand, six hundred thirty-eight".