1914971531 has 6 divisors (see below), whose sum is σ = 2104886196. Its totient is φ = 1740883100.

The previous prime is 1914971497. The next prime is 1914971533. The reversal of 1914971531 is 1351794191.

It is not a de Polignac number, because 1914971531 - 2¹⁸ = 1914709387 is a prime.

It is a super-2 number, since 2×1914971531² = 7334231929080967922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1914971533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7912985 + ... + 7913226.

It is an arithmetic number, because the mean of its divisors is an integer number (350814366).

Almost surely, 2^1914971531 is an apocalyptic number.

1914971531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1914971531 is a deficient number, since it is larger than the sum of its proper divisors (189914665).

1914971531 is a wasteful number, since it uses less digits than its factorization.

1914971531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15826233 (or 15826222 counting only the distinct ones).

The product of its digits is 34020, while the sum is 41.

The square root of 1914971531 is about 43760.3876925239. The cubic root of 1914971531 is about 1241.8070105427.

The spelling of 1914971531 in words is "one billion, nine hundred fourteen million, nine hundred seventy-one thousand, five hundred thirty-one".