3491746281 has 9 divisors (see below), whose sum is σ = 5043889591. Its totient is φ = 2327712672.

The previous prime is 3491746267. The next prime is 3491746309. The reversal of 3491746281 is 1826471943.

The square root of 3491746281 is 59091.

It is a perfect power (a square), and thus also a powerful number.

3491746281 is a `hidden beast` number, since 3 + 4 + 9 + 17 + 4 + 628 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 468506025 + 3023240256 = 21645^2 + 54984^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 3491746281 - 2²³ = 3483357673 is a prime.

It is a super-2 number, since 2×3491746281² = 24384584181754661922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3491746211) 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 8 ways as a sum of consecutive naturals, for example, 167425 + ... + 187121.

Almost surely, 2^3491746281 is an apocalyptic number.

3491746281 is the 59091-st square number.

3491746281 is the 29546-th centered octagonal number.

It is an amenable number.

3491746281 is a deficient number, since it is larger than the sum of its proper divisors (1552143310).

3491746281 is an frugal number, since it uses more digits than its factorization.

3491746281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39400 (or 19700 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The cubic root of 3491746281 is about 1517.1000631141.

The spelling of 3491746281 in words is "three billion, four hundred ninety-one million, seven hundred forty-six thousand, two hundred eighty-one".