1999022415 has 24 divisors (see below), whose sum is σ = 3463399440. Its totient is φ = 984132864.

The previous prime is 1999022413. The next prime is 1999022419. The reversal of 1999022415 is 5142209991.

It is not a de Polignac number, because 1999022415 - 2¹ = 1999022413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999022411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391750 + ... + 396819.

It is an arithmetic number, because the mean of its divisors is an integer number (144308310).

Almost surely, 2^1999022415 is an apocalyptic number.

1999022415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1999022415 is a deficient number, since it is larger than the sum of its proper divisors (1464377025).

1999022415 is a wasteful number, since it uses less digits than its factorization.

1999022415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788603 (or 788590 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 1999022415 is about 44710.4284815075. The cubic root of 1999022415 is about 1259.7157364528.

The spelling of 1999022415 in words is "one billion, nine hundred ninety-nine million, twenty-two thousand, four hundred fifteen".