3547862981 has 16 divisors (see below), whose sum is σ = 3874535280. Its totient is φ = 3229079040.

The previous prime is 3547862977. The next prime is 3547863001. The reversal of 3547862981 is 1892687453.

It can be written as a sum of positive squares in 8 ways, for example, as 16532356 + 3531330625 = 4066^2 + 59425^2 .

It is a cyclic number.

It is not a de Polignac number, because 3547862981 - 2² = 3547862977 is a prime.

It is a super-2 number, since 2×3547862981² = 25174663463900412722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3547862081) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 427451 + ... + 435671.

It is an arithmetic number, because the mean of its divisors is an integer number (242158455).

Almost surely, 2^3547862981 is an apocalyptic number.

It is an amenable number.

3547862981 is a deficient number, since it is larger than the sum of its proper divisors (326672299).

3547862981 is a wasteful number, since it uses less digits than its factorization.

3547862981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8696.

The product of its digits is 2903040, while the sum is 53.

The square root of 3547862981 is about 59563.9402742968. The cubic root of 3547862981 is about 1525.1841370057.

The spelling of 3547862981 in words is "three billion, five hundred forty-seven million, eight hundred sixty-two thousand, nine hundred eighty-one".