1246135645 has 8 divisors (see below), whose sum is σ = 1496295000. Its totient is φ = 996287040.

The previous prime is 1246135619. The next prime is 1246135661. The reversal of 1246135645 is 5465316421.

It can be written as a sum of positive squares in 4 ways, for example, as 146748996 + 1099386649 = 12114^2 + 33157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1246135645 is a prime.

It is a super-3 number, since 3×1246135645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68770 + ... + 84979.

It is an arithmetic number, because the mean of its divisors is an integer number (187036875).

Almost surely, 2^1246135645 is an apocalyptic number.

It is an amenable number.

1246135645 is a deficient number, since it is larger than the sum of its proper divisors (250159355).

1246135645 is a wasteful number, since it uses less digits than its factorization.

1246135645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155375.

The product of its digits is 86400, while the sum is 37.

The square root of 1246135645 is about 35300.6465238245. The cubic root of 1246135645 is about 1076.1061324005.

The spelling of 1246135645 in words is "one billion, two hundred forty-six million, one hundred thirty-five thousand, six hundred forty-five".