1901242529 has 4 divisors (see below), whose sum is σ = 1947614340. Its totient is φ = 1854870720.

The previous prime is 1901242507. The next prime is 1901242531. The reversal of 1901242529 is 9252421091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1059372304 + 841870225 = 32548^2 + 29015^2 .

It is a cyclic number.

It is not a de Polignac number, because 1901242529 - 2²⁸ = 1632807073 is a prime.

It is a super-2 number, since 2×1901242529² = 7229446308156631682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1901242559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23185844 + ... + 23185925.

It is an arithmetic number, because the mean of its divisors is an integer number (486903585).

Almost surely, 2^1901242529 is an apocalyptic number.

It is an amenable number.

1901242529 is a deficient number, since it is larger than the sum of its proper divisors (46371811).

1901242529 is an equidigital number, since it uses as much as digits as its factorization.

1901242529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46371810.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1901242529 is about 43603.2398910907. The cubic root of 1901242529 is about 1238.8322619570.

The spelling of 1901242529 in words is "one billion, nine hundred one million, two hundred forty-two thousand, five hundred twenty-nine".