1924641097 has 4 divisors (see below), whose sum is σ = 1924762500. Its totient is φ = 1924519696.

The previous prime is 1924641083. The next prime is 1924641137. The reversal of 1924641097 is 7901464291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7901464291 = 7 ⋅1128780613.

It can be written as a sum of positive squares in 2 ways, for example, as 1201246281 + 723394816 = 34659^2 + 26896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1924641097 is a prime.

It is a super-2 number, since 2×1924641097² = 7408486704522726818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1924641007) 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 3 ways as a sum of consecutive naturals, for example, 32578 + ... + 70075.

It is an arithmetic number, because the mean of its divisors is an integer number (481190625).

Almost surely, 2^1924641097 is an apocalyptic number.

It is an amenable number.

1924641097 is a deficient number, since it is larger than the sum of its proper divisors (121403).

1924641097 is a wasteful number, since it uses less digits than its factorization.

1924641097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121402.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1924641097 is about 43870.7316670237. The cubic root of 1924641097 is about 1243.8936526179.

The spelling of 1924641097 in words is "one billion, nine hundred twenty-four million, six hundred forty-one thousand, ninety-seven".