1914969515 has 4 divisors (see below), whose sum is σ = 2297963424. Its totient is φ = 1531975608.

The previous prime is 1914969491. The next prime is 1914969517. The reversal of 1914969515 is 5159694191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5159694191 = 17 ⋅303511423.

It is a cyclic number.

It is not a de Polignac number, because 1914969515 - 2¹⁶ = 1914903979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1914969517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191496947 + ... + 191496956.

It is an arithmetic number, because the mean of its divisors is an integer number (574490856).

Almost surely, 2^1914969515 is an apocalyptic number.

1914969515 is a deficient number, since it is larger than the sum of its proper divisors (382993909).

1914969515 is an equidigital number, since it uses as much as digits as its factorization.

1914969515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382993908.

The product of its digits is 437400, while the sum is 50.

The square root of 1914969515 is about 43760.3646579870. The cubic root of 1914969515 is about 1241.8065747688.

The spelling of 1914969515 in words is "one billion, nine hundred fourteen million, nine hundred sixty-nine thousand, five hundred fifteen".