1681271502 has 32 divisors (see below), whose sum is σ = 3447269280. Its totient is φ = 546324480.

The previous prime is 1681271477. The next prime is 1681271519. The reversal of 1681271502 is 2051721861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503374 + ... + 506702.

It is an arithmetic number, because the mean of its divisors is an integer number (107727165).

Almost surely, 2^1681271502 is an apocalyptic number.

1681271502 is an abundant number, since it is smaller than the sum of its proper divisors (1765997778).

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

1681271502 is a wasteful number, since it uses less digits than its factorization.

1681271502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 1681271502 is about 41003.3108663191. The cubic root of 1681271502 is about 1189.0842239962.

The spelling of 1681271502 in words is "one billion, six hundred eighty-one million, two hundred seventy-one thousand, five hundred two".