1278251952 has 40 divisors (see below), whose sum is σ = 3328167936. Its totient is φ = 422726976.

The previous prime is 1278251941. The next prime is 1278251963. The reversal of 1278251952 is 2591528721.

It is an interprime number because it is at equal distance from previous prime (1278251941) and next prime (1278251963).

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, 98748 + ... + 110939.

Almost surely, 2^1278251952 is an apocalyptic number.

1278251952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1278251952 is an abundant number, since it is smaller than the sum of its proper divisors (2049915984).

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

1278251952 is a wasteful number, since it uses less digits than its factorization.

1278251952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209825 (or 209819 counting only the distinct ones).

The product of its digits is 100800, while the sum is 42.

The square root of 1278251952 is about 35752.6495801360. The cubic root of 1278251952 is about 1085.2725576882.

The spelling of 1278251952 in words is "one billion, two hundred seventy-eight million, two hundred fifty-one thousand, nine hundred fifty-two".