1245778152 has 32 divisors (see below), whose sum is σ = 3214913280. Its totient is φ = 401863680.

The previous prime is 1245778151. The next prime is 1245778189. The reversal of 1245778152 is 2518775421.

It is not an unprimeable number, because it can be changed into a prime (1245778151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836473 + ... + 837960.

It is an arithmetic number, because the mean of its divisors is an integer number (100466040).

Almost surely, 2^1245778152 is an apocalyptic number.

1245778152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1245778152 is an abundant number, since it is smaller than the sum of its proper divisors (1969135128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245778152 is a wasteful number, since it uses less digits than its factorization.

1245778152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674473 (or 1674469 counting only the distinct ones).

The product of its digits is 156800, while the sum is 42.

The square root of 1245778152 is about 35295.5826131260. The cubic root of 1245778152 is about 1076.0032176537.

It can be divided in two parts, 12457 and 78152, that added together give a palindrome (90609).

The spelling of 1245778152 in words is "one billion, two hundred forty-five million, seven hundred seventy-eight thousand, one hundred fifty-two".