2030697581 has 4 divisors (see below), whose sum is σ = 2215306464. Its totient is φ = 1846088700.

The previous prime is 2030697551. The next prime is 2030697587. The reversal of 2030697581 is 1857960302.

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 2030697581 - 2¹⁰ = 2030696557 is a prime.

It is a super-2 number, since 2×2030697581² = 8247465330958503122, 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 (2030697587) 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, 92304425 + ... + 92304446.

It is an arithmetic number, because the mean of its divisors is an integer number (553826616).

Almost surely, 2^2030697581 is an apocalyptic number.

It is an amenable number.

2030697581 is a deficient number, since it is larger than the sum of its proper divisors (184608883).

2030697581 is a wasteful number, since it uses less digits than its factorization.

2030697581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184608882.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 2030697581 is about 45063.2619880097. The cubic root of 2030697581 is about 1266.3344364675.

The spelling of 2030697581 in words is "two billion, thirty million, six hundred ninety-seven thousand, five hundred eighty-one".