1923426490 has 16 divisors (see below), whose sum is σ = 3463485480. Its totient is φ = 769077760.

The previous prime is 1923426473. The next prime is 1923426499. The reversal of 1923426490 is 946243291.

It can be written as a sum of positive squares in 4 ways, for example, as 1871168049 + 52258441 = 43257^2 + 7229^2 .

It is not an unprimeable number, because it can be changed into a prime (1923426499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7951 + ... + 62530.

Almost surely, 2^1923426490 is an apocalyptic number.

1923426490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1923426490 is a deficient number, since it is larger than the sum of its proper divisors (1540058990).

1923426490 is a wasteful number, since it uses less digits than its factorization.

1923426490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73217.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 1923426490 is about 43856.8864603952. The cubic root of 1923426490 is about 1243.6319311168.

The spelling of 1923426490 in words is "one billion, nine hundred twenty-three million, four hundred twenty-six thousand, four hundred ninety".