1681293154 has 16 divisors (see below), whose sum is σ = 2621286720. Its totient is φ = 807806160.

The previous prime is 1681293139. The next prime is 1681293161. The reversal of 1681293154 is 4513921861.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56454 + ... + 80929.

It is an arithmetic number, because the mean of its divisors is an integer number (163830420).

Almost surely, 2^1681293154 is an apocalyptic number.

1681293154 is a deficient number, since it is larger than the sum of its proper divisors (939993566).

1681293154 is a wasteful number, since it uses less digits than its factorization.

1681293154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137625.

The product of its digits is 51840, while the sum is 40.

The square root of 1681293154 is about 41003.5748929285. The cubic root of 1681293154 is about 1189.0893284545.

The spelling of 1681293154 in words is "one billion, six hundred eighty-one million, two hundred ninety-three thousand, one hundred fifty-four".