1919148431 has 2 divisors, whose sum is σ = 1919148432. Its totient is φ = 1919148430.

The previous prime is 1919148383. The next prime is 1919148461. The reversal of 1919148431 is 1348419191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1919148431 - 2¹⁰ = 1919147407 is a prime.

It is a super-2 number, since 2×1919148431² = 7366261400419523522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1919148461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959574215 + 959574216.

It is an arithmetic number, because the mean of its divisors is an integer number (959574216).

Almost surely, 2^1919148431 is an apocalyptic number.

1919148431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1919148431 is an equidigital number, since it uses as much as digits as its factorization.

1919148431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 41.

The square root of 1919148431 is about 43808.0863654189. The cubic root of 1919148431 is about 1242.7092236199.

The spelling of 1919148431 in words is "one billion, nine hundred nineteen million, one hundred forty-eight thousand, four hundred thirty-one".