1249274419 has 2 divisors, whose sum is σ = 1249274420. Its totient is φ = 1249274418.

The previous prime is 1249274357. The next prime is 1249274431. The reversal of 1249274419 is 9144729421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1249274419 - 2¹¹ = 1249272371 is a prime.

It is a super-2 number, since 2×1249274419² = 3121373147935575122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1249274219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624637209 + 624637210.

It is an arithmetic number, because the mean of its divisors is an integer number (624637210).

Almost surely, 2^1249274419 is an apocalyptic number.

1249274419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249274419 is an equidigital number, since it uses as much as digits as its factorization.

1249274419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 1249274419 is about 35345.0763049113. The cubic root of 1249274419 is about 1077.0088757575.

The spelling of 1249274419 in words is "one billion, two hundred forty-nine million, two hundred seventy-four thousand, four hundred nineteen".