1949663419 has 8 divisors (see below), whose sum is σ = 2137928112. Its totient is φ = 1763235840.

The previous prime is 1949663407. The next prime is 1949663461. The reversal of 1949663419 is 9143669491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1949663419 is a prime.

It is a super-2 number, since 2×1949663419² = 7602374894773539122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1949603419) 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, 457054 + ... + 461299.

It is an arithmetic number, because the mean of its divisors is an integer number (267241014).

Almost surely, 2^1949663419 is an apocalyptic number.

1949663419 is a deficient number, since it is larger than the sum of its proper divisors (188264693).

1949663419 is a wasteful number, since it uses less digits than its factorization.

1949663419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918557.

The product of its digits is 1259712, while the sum is 52.

The square root of 1949663419 is about 44154.9931378095. The cubic root of 1949663419 is about 1249.2610926855.

The spelling of 1949663419 in words is "one billion, nine hundred forty-nine million, six hundred sixty-three thousand, four hundred nineteen".