6901921492 has 12 divisors (see below), whose sum is σ = 12079887316. Its totient is φ = 3450525120.

The previous prime is 6901921487. The next prime is 6901921517. The reversal of 6901921492 is 2941291096.

It can be written as a sum of positive squares in 2 ways, for example, as 897841296 + 6004080196 = 29964^2 + 77486^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71859 + ... + 137722.

Almost surely, 2^6901921492 is an apocalyptic number.

It is an amenable number.

6901921492 is a deficient number, since it is larger than the sum of its proper divisors (5177965824).

6901921492 is a wasteful number, since it uses less digits than its factorization.

6901921492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217818 (or 217816 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 6901921492 is about 83077.8038467556. The cubic root of 6901921492 is about 1903.9549651125.

The spelling of 6901921492 in words is "six billion, nine hundred one million, nine hundred twenty-one thousand, four hundred ninety-two".