1681538702 has 8 divisors (see below), whose sum is σ = 2523918312. Its totient is φ = 840232600.

The previous prime is 1681538701. The next prime is 1681538707. The reversal of 1681538702 is 2078351861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1681538702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681538701) 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, 264449 + ... + 270732.

It is an arithmetic number, because the mean of its divisors is an integer number (315489789).

Almost surely, 2^1681538702 is an apocalyptic number.

1681538702 is a deficient number, since it is larger than the sum of its proper divisors (842379610).

1681538702 is a wasteful number, since it uses less digits than its factorization.

1681538702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536754.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1681538702 is about 41006.5690103427. The cubic root of 1681538702 is about 1189.1472133218.

The spelling of 1681538702 in words is "one billion, six hundred eighty-one million, five hundred thirty-eight thousand, seven hundred two".