1434634891 has 2 divisors, whose sum is σ = 1434634892. Its totient is φ = 1434634890.

The previous prime is 1434634871. The next prime is 1434634931. The reversal of 1434634891 is 1984364341.

It is a weak prime.

It is an emirp because it is prime and its reverse (1984364341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1434634891 - 2²¹ = 1432537739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1434634871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717317445 + 717317446.

It is an arithmetic number, because the mean of its divisors is an integer number (717317446).

Almost surely, 2^1434634891 is an apocalyptic number.

1434634891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1434634891 is an equidigital number, since it uses as much as digits as its factorization.

1434634891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 1434634891 is about 37876.5744359228. The cubic root of 1434634891 is about 1127.8390557537.

The spelling of 1434634891 in words is "one billion, four hundred thirty-four million, six hundred thirty-four thousand, eight hundred ninety-one".