1253998413 has 12 divisors (see below), whose sum is σ = 1860286428. Its totient is φ = 813404160.

The previous prime is 1253998397. The next prime is 1253998439. The reversal of 1253998413 is 3148993521.

It is a happy number.

1253998413 is a `hidden beast` number, since 12 + 539 + 98 + 4 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1049565609 + 204432804 = 32397^2 + 14298^2 .

It is not a de Polignac number, because 1253998413 - 2⁴ = 1253998397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253998463) 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, 1882548 + ... + 1883213.

It is an arithmetic number, because the mean of its divisors is an integer number (155023869).

Almost surely, 2^1253998413 is an apocalyptic number.

It is an amenable number.

1253998413 is a deficient number, since it is larger than the sum of its proper divisors (606288015).

1253998413 is a wasteful number, since it uses less digits than its factorization.

1253998413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765804 (or 3765801 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 1253998413 is about 35411.8400114990. The cubic root of 1253998413 is about 1078.3646984823.

The spelling of 1253998413 in words is "one billion, two hundred fifty-three million, nine hundred ninety-eight thousand, four hundred thirteen".