1681418734 has 32 divisors (see below), whose sum is σ = 2680031232. Its totient is φ = 790020000.

The previous prime is 1681418671. The next prime is 1681418741. The reversal of 1681418734 is 4378141861.

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, 292084 + ... + 297784.

It is an arithmetic number, because the mean of its divisors is an integer number (83750976).

Almost surely, 2^1681418734 is an apocalyptic number.

1681418734 is a deficient number, since it is larger than the sum of its proper divisors (998612498).

1681418734 is a wasteful number, since it uses less digits than its factorization.

1681418734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872.

The product of its digits is 129024, while the sum is 43.

The square root of 1681418734 is about 41005.1061942290. The cubic root of 1681418734 is about 1189.1189330716.

The spelling of 1681418734 in words is "one billion, six hundred eighty-one million, four hundred eighteen thousand, seven hundred thirty-four".