1926449490 has 32 divisors (see below), whose sum is σ = 5283976320. Its totient is φ = 440331264.

The previous prime is 1926449471. The next prime is 1926449491. The reversal of 1926449490 is 949446291.

It is a super-2 number, since 2×1926449490² = 7422415275042520200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1926449491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4586575 + ... + 4586994.

It is an arithmetic number, because the mean of its divisors is an integer number (165124260).

Almost surely, 2^1926449490 is an apocalyptic number.

1926449490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1926449490 is an abundant number, since it is smaller than the sum of its proper divisors (3357526830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1926449490 is a wasteful number, since it uses less digits than its factorization.

1926449490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9173586.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 1926449490 is about 43891.3373002008. The cubic root of 1926449490 is about 1244.2831182033.

The spelling of 1926449490 in words is "one billion, nine hundred twenty-six million, four hundred forty-nine thousand, four hundred ninety".