1276981002 has 36 divisors (see below), whose sum is σ = 3041189970. Its totient is φ = 386963280.

The previous prime is 1276980977. The next prime is 1276981033. The reversal of 1276981002 is 2001896721.

It can be written as a sum of positive squares in only one way, i.e., 1039482081 + 237498921 = 32241^2 + 15411^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 290977 + ... + 295332.

Almost surely, 2^1276981002 is an apocalyptic number.

1276981002 is an abundant number, since it is smaller than the sum of its proper divisors (1764208968).

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

1276981002 is a wasteful number, since it uses less digits than its factorization.

1276981002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586339 (or 586325 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1276981002 is about 35734.8709526143. The cubic root of 1276981002 is about 1084.9127474131.

The spelling of 1276981002 in words is "one billion, two hundred seventy-six million, nine hundred eighty-one thousand, two".