1863424490 has 16 divisors (see below), whose sum is σ = 3368563848. Its totient is φ = 742169856.

The previous prime is 1863424489. The next prime is 1863424501. The reversal of 1863424490 is 944243681.

It can be written as a sum of positive squares in 4 ways, for example, as 1717522249 + 145902241 = 41443^2 + 12079^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 397547 + ... + 402206.

Almost surely, 2^1863424490 is an apocalyptic number.

1863424490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1863424490 is a deficient number, since it is larger than the sum of its proper divisors (1505139358).

1863424490 is a wasteful number, since it uses less digits than its factorization.

1863424490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799993.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 1863424490 is about 43167.4007788285. The cubic root of 1863424490 is about 1230.5632271932.

The spelling of 1863424490 in words is "one billion, eight hundred sixty-three million, four hundred twenty-four thousand, four hundred ninety".