1253190889 has 4 divisors (see below), whose sum is σ = 1254398080. Its totient is φ = 1251983700.

The previous prime is 1253190859. The next prime is 1253190899. The reversal of 1253190889 is 9880913521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9880913521 = 16103 ⋅613607.

It is a cyclic number.

It is not a de Polignac number, because 1253190889 - 2¹¹ = 1253188841 is a prime.

It is a super-2 number, since 2×1253190889² = 3140974808545220642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253190859) 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, 602037 + ... + 604114.

It is an arithmetic number, because the mean of its divisors is an integer number (313599520).

Almost surely, 2^1253190889 is an apocalyptic number.

It is an amenable number.

1253190889 is a deficient number, since it is larger than the sum of its proper divisors (1207191).

1253190889 is a wasteful number, since it uses less digits than its factorization.

1253190889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207190.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 1253190889 is about 35400.4362826223. The cubic root of 1253190889 is about 1078.1331744353.

The spelling of 1253190889 in words is "one billion, two hundred fifty-three million, one hundred ninety thousand, eight hundred eighty-nine".