1949789225 has 12 divisors (see below), whose sum is σ = 2458719120. Its totient is φ = 1533392400.

The previous prime is 1949789221. The next prime is 1949789239. The reversal of 1949789225 is 5229879491.

It is not a de Polignac number, because 1949789225 - 2² = 1949789221 is a prime.

It is a super-2 number, since 2×1949789225² = 7603356043852201250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1949789221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 659471 + ... + 662420.

It is an arithmetic number, because the mean of its divisors is an integer number (204893260).

Almost surely, 2^1949789225 is an apocalyptic number.

It is an amenable number.

1949789225 is a deficient number, since it is larger than the sum of its proper divisors (508929895).

1949789225 is a wasteful number, since it uses less digits than its factorization.

1949789225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321960 (or 1321955 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 56.

The square root of 1949789225 is about 44156.4177102264. The cubic root of 1949789225 is about 1249.2879624791.

The spelling of 1949789225 in words is "one billion, nine hundred forty-nine million, seven hundred eighty-nine thousand, two hundred twenty-five".