1244151940 has 12 divisors (see below), whose sum is σ = 2612719116. Its totient is φ = 497660768.

The previous prime is 1244151917. The next prime is 1244151943. The reversal of 1244151940 is 491514421.

It can be written as a sum of positive squares in 2 ways, for example, as 494706564 + 749445376 = 22242^2 + 27376^2 .

It is not an unprimeable number, because it can be changed into a prime (1244151943) 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, 31103779 + ... + 31103818.

It is an arithmetic number, because the mean of its divisors is an integer number (217726593).

Almost surely, 2^1244151940 is an apocalyptic number.

1244151940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244151940 is an abundant number, since it is smaller than the sum of its proper divisors (1368567176).

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

1244151940 is a wasteful number, since it uses less digits than its factorization.

1244151940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62207606 (or 62207604 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1244151940 is about 35272.5380430725. The cubic root of 1244151940 is about 1075.5348166300.

The spelling of 1244151940 in words is "one billion, two hundred forty-four million, one hundred fifty-one thousand, nine hundred forty".