1494606551 has 4 divisors (see below), whose sum is σ = 1494897504. Its totient is φ = 1494315600.

The previous prime is 1494606523. The next prime is 1494606563. The reversal of 1494606551 is 1556064941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1494606551 - 2¹⁸ = 1494344407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1494606499 and 1494606508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1494606511) 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 in 3 ways as a sum of consecutive naturals, for example, 137630 + ... + 148091.

It is an arithmetic number, because the mean of its divisors is an integer number (373724376).

Almost surely, 2^1494606551 is an apocalyptic number.

1494606551 is a deficient number, since it is larger than the sum of its proper divisors (290953).

1494606551 is an equidigital number, since it uses as much as digits as its factorization.

1494606551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290952.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 1494606551 is about 38660.1416319185. The cubic root of 1494606551 is about 1143.3406042277.

The spelling of 1494606551 in words is "one billion, four hundred ninety-four million, six hundred six thousand, five hundred fifty-one".