1899719252 has 12 divisors (see below), whose sum is σ = 3327870336. Its totient is φ = 948899160.

The previous prime is 1899719251. The next prime is 1899719257. The reversal of 1899719252 is 2529179981.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1899719194 and 1899719203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899719251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235658 + ... + 243585.

It is an arithmetic number, because the mean of its divisors is an integer number (277322528).

Almost surely, 2^1899719252 is an apocalyptic number.

It is an amenable number.

1899719252 is a deficient number, since it is larger than the sum of its proper divisors (1428151084).

1899719252 is a wasteful number, since it uses less digits than its factorization.

1899719252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480238 (or 480236 counting only the distinct ones).

The product of its digits is 816480, while the sum is 53.

The square root of 1899719252 is about 43585.7689160120. The cubic root of 1899719252 is about 1238.5013224328.

The spelling of 1899719252 in words is "one billion, eight hundred ninety-nine million, seven hundred nineteen thousand, two hundred fifty-two".