6949904981 has 4 divisors (see below), whose sum is σ = 7014857472. Its totient is φ = 6884952492.

The previous prime is 6949904933. The next prime is 6949905007. The reversal of 6949904981 is 1894099496.

6949904981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6949904981 - 2¹⁰ = 6949903957 is a prime.

It is a super-2 number, since 2×6949904981² = 96602358489857220722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6949904981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6949904281) 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, 32476085 + ... + 32476298.

It is an arithmetic number, because the mean of its divisors is an integer number (1753714368).

Almost surely, 2^6949904981 is an apocalyptic number.

It is an amenable number.

6949904981 is a deficient number, since it is larger than the sum of its proper divisors (64952491).

6949904981 is a wasteful number, since it uses less digits than its factorization.

6949904981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64952490.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The square root of 6949904981 is about 83366.0901146263. The cubic root of 6949904981 is about 1908.3570002281.

The spelling of 6949904981 in words is "six billion, nine hundred forty-nine million, nine hundred four thousand, nine hundred eighty-one".