1253859189 has 16 divisors (see below), whose sum is σ = 1838161920. Its totient is φ = 753928560.

The previous prime is 1253859179. The next prime is 1253859197. The reversal of 1253859189 is 9819583521.

It is not a de Polignac number, because 1253859189 - 2¹⁵ = 1253826421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253859149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145399 + ... + 153780.

It is an arithmetic number, because the mean of its divisors is an integer number (114885120).

Almost surely, 2^1253859189 is an apocalyptic number.

It is an amenable number.

1253859189 is a deficient number, since it is larger than the sum of its proper divisors (584302731).

1253859189 is a wasteful number, since it uses less digits than its factorization.

1253859189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299320.

The product of its digits is 777600, while the sum is 51.

The square root of 1253859189 is about 35409.8741737386. The cubic root of 1253859189 is about 1078.3247888616.

The spelling of 1253859189 in words is "one billion, two hundred fifty-three million, eight hundred fifty-nine thousand, one hundred eighty-nine".