1245622653 has 48 divisors (see below), whose sum is σ = 2073614400. Its totient is φ = 712592640.

The previous prime is 1245622639. The next prime is 1245622669. The reversal of 1245622653 is 3562265421.

1245622653 is a `hidden beast` number, since 1 + 24 + 5 + 622 + 6 + 5 + 3 = 666.

It is not a de Polignac number, because 1245622653 - 2⁵ = 1245622621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245621653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 595233 + ... + 597321.

It is an arithmetic number, because the mean of its divisors is an integer number (43200300).

Almost surely, 2^1245622653 is an apocalyptic number.

It is an amenable number.

1245622653 is a deficient number, since it is larger than the sum of its proper divisors (827991747).

1245622653 is a wasteful number, since it uses less digits than its factorization.

1245622653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442 (or 2439 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1245622653 is about 35293.3797333154. The cubic root of 1245622653 is about 1075.9584466040.

The spelling of 1245622653 in words is "one billion, two hundred forty-five million, six hundred twenty-two thousand, six hundred fifty-three".