1253140388 has 12 divisors (see below), whose sum is σ = 2193255372. Its totient is φ = 626496000.

The previous prime is 1253140387. The next prime is 1253140403. The reversal of 1253140388 is 8830413521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 407959204 + 845181184 = 20198^2 + 29072^2 .

It is not an unprimeable number, because it can be changed into a prime (1253140387) 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, 39956 + ... + 64052.

It is an arithmetic number, because the mean of its divisors is an integer number (182771281).

Almost surely, 2^1253140388 is an apocalyptic number.

It is an amenable number.

1253140388 is a deficient number, since it is larger than the sum of its proper divisors (940114984).

1253140388 is a wasteful number, since it uses less digits than its factorization.

1253140388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37102 (or 37100 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1253140388 is about 35399.7229932665. The cubic root of 1253140388 is about 1078.1186920620.

The spelling of 1253140388 in words is "one billion, two hundred fifty-three million, one hundred forty thousand, three hundred eighty-eight".