1919641514 has 16 divisors (see below), whose sum is σ = 3319939008. Its totient is φ = 815422272.

The previous prime is 1919641501. The next prime is 1919641517. The reversal of 1919641514 is 4151469191.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1919641517) 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, 605132 + ... + 608295.

It is an arithmetic number, because the mean of its divisors is an integer number (207496188).

Almost surely, 2^1919641514 is an apocalyptic number.

1919641514 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1919641514 is a deficient number, since it is larger than the sum of its proper divisors (1400297494).

1919641514 is a wasteful number, since it uses less digits than its factorization.

1919641514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213549.

The product of its digits is 38880, while the sum is 41.

The square root of 1919641514 is about 43813.7137663540. The cubic root of 1919641514 is about 1242.8156434451.

The spelling of 1919641514 in words is "one billion, nine hundred nineteen million, six hundred forty-one thousand, five hundred fourteen".