1949935172 has 6 divisors (see below), whose sum is σ = 3412386558. Its totient is φ = 974967584.

The previous prime is 1949935171. The next prime is 1949935177. The reversal of 1949935172 is 2715399491.

It can be written as a sum of positive squares in only one way, i.e., 1022976256 + 926958916 = 31984^2 + 30446^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1949935172.

It is not an unprimeable number, because it can be changed into a prime (1949935171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243741893 + ... + 243741900.

It is an arithmetic number, because the mean of its divisors is an integer number (568731093).

Almost surely, 2^1949935172 is an apocalyptic number.

It is an amenable number.

1949935172 is a deficient number, since it is larger than the sum of its proper divisors (1462451386).

1949935172 is a wasteful number, since it uses less digits than its factorization.

1949935172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487483797 (or 487483795 counting only the distinct ones).

The product of its digits is 612360, while the sum is 50.

The square root of 1949935172 is about 44158.0702929827. The cubic root of 1949935172 is about 1249.3191325630.

The spelling of 1949935172 in words is "one billion, nine hundred forty-nine million, nine hundred thirty-five thousand, one hundred seventy-two".