2138628572 has 24 divisors (see below), whose sum is σ = 3757882800. Its totient is φ = 1064958336.

The previous prime is 2138628571. The next prime is 2138628617. The reversal of 2138628572 is 2758268312.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138628571) 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, 1893704 + ... + 1894832.

It is an arithmetic number, because the mean of its divisors is an integer number (156578450).

Almost surely, 2^2138628572 is an apocalyptic number.

It is an amenable number.

2138628572 is a deficient number, since it is larger than the sum of its proper divisors (1619254228).

2138628572 is a wasteful number, since it uses less digits than its factorization.

2138628572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645 (or 2643 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 2138628572 is about 46245.3086485537. The cubic root of 2138628572 is about 1288.3834029246.

The spelling of 2138628572 in words is "two billion, one hundred thirty-eight million, six hundred twenty-eight thousand, five hundred seventy-two".