1253983617 has 6 divisors (see below), whose sum is σ = 1811309682. Its totient is φ = 835989072.

The previous prime is 1253983607. The next prime is 1253983637. The reversal of 1253983617 is 7163893521.

1253983617 is a `hidden beast` number, since 1 + 25 + 3 + 9 + 8 + 3 + 617 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1126542096 + 127441521 = 33564^2 + 11289^2 .

It is not a de Polignac number, because 1253983617 - 2⁸ = 1253983361 is a prime.

It is a super-3 number, since 3×1253983617³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1253983607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69665748 + ... + 69665765.

It is an arithmetic number, because the mean of its divisors is an integer number (301884947).

Almost surely, 2^1253983617 is an apocalyptic number.

It is an amenable number.

1253983617 is a deficient number, since it is larger than the sum of its proper divisors (557326065).

1253983617 is a wasteful number, since it uses less digits than its factorization.

1253983617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139331519 (or 139331516 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1253983617 is about 35411.6310977057. The cubic root of 1253983617 is about 1078.3604572364.

The spelling of 1253983617 in words is "one billion, two hundred fifty-three million, nine hundred eighty-three thousand, six hundred seventeen".