6945401790 has 48 divisors (see below), whose sum is σ = 18063431568. Its totient is φ = 1851554688.

The previous prime is 6945401699. The next prime is 6945401791. The reversal of 6945401790 is 971045496.

6945401790 is a `hidden beast` number, since 6 + 9 + 4 + 540 + 17 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6945401791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 357097 + ... + 376043.

It is an arithmetic number, because the mean of its divisors is an integer number (376321491).

Almost surely, 2^6945401790 is an apocalyptic number.

6945401790 is an abundant number, since it is smaller than the sum of its proper divisors (11118029778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6945401790 is a wasteful number, since it uses less digits than its factorization.

6945401790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23033 (or 23030 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 6945401790 is about 83339.0772087140. The cubic root of 6945401790 is about 1907.9447378612.

The spelling of 6945401790 in words is "six billion, nine hundred forty-five million, four hundred one thousand, seven hundred ninety".