1494254861 has 4 divisors (see below), whose sum is σ = 1630096224. Its totient is φ = 1358413500.

The previous prime is 1494254857. The next prime is 1494254891. The reversal of 1494254861 is 1684524941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1684524941 = 11 ⋅153138631.

It is a cyclic number.

It is not a de Polignac number, because 1494254861 - 2² = 1494254857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1494254821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67920665 + ... + 67920686.

It is an arithmetic number, because the mean of its divisors is an integer number (407524056).

Almost surely, 2^1494254861 is an apocalyptic number.

1494254861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1494254861 is a deficient number, since it is larger than the sum of its proper divisors (135841363).

1494254861 is a wasteful number, since it uses less digits than its factorization.

1494254861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135841362.

The product of its digits is 276480, while the sum is 44.

The square root of 1494254861 is about 38655.5928812378. The cubic root of 1494254861 is about 1143.2509188631.

The spelling of 1494254861 in words is "one billion, four hundred ninety-four million, two hundred fifty-four thousand, eight hundred sixty-one".