1045281923 has 4 divisors (see below), whose sum is σ = 1194607920. Its totient is φ = 895955928.

The previous prime is 1045281899. The next prime is 1045281929. The reversal of 1045281923 is 3291825401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3291825401 = 83 ⋅39660547.

It is a de Polignac number, because none of the positive numbers 2^k-1045281923 is a prime.

It is a super-2 number, since 2×1045281923² = 2185228597101155858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045281929) 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, 74662988 + ... + 74663001.

It is an arithmetic number, because the mean of its divisors is an integer number (298651980).

Almost surely, 2^1045281923 is an apocalyptic number.

1045281923 is a deficient number, since it is larger than the sum of its proper divisors (149325997).

1045281923 is an equidigital number, since it uses as much as digits as its factorization.

1045281923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149325996.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1045281923 is about 32330.8200174385. The cubic root of 1045281923 is about 1014.8717101884.

The spelling of 1045281923 in words is "one billion, forty-five million, two hundred eighty-one thousand, nine hundred twenty-three".