1456215987 has 4 divisors (see below), whose sum is σ = 1941621320. Its totient is φ = 970810656.

The previous prime is 1456215967. The next prime is 1456215991. The reversal of 1456215987 is 7895126541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7895126541 = 3 ⋅2631708847.

It is not a de Polignac number, because 1456215987 - 2¹⁴ = 1456199603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1456215967) 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, 242702662 + ... + 242702667.

It is an arithmetic number, because the mean of its divisors is an integer number (485405330).

Almost surely, 2^1456215987 is an apocalyptic number.

1456215987 is a deficient number, since it is larger than the sum of its proper divisors (485405333).

1456215987 is an equidigital number, since it uses as much as digits as its factorization.

1456215987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485405332.

The product of its digits is 604800, while the sum is 48.

The square root of 1456215987 is about 38160.3981504386. The cubic root of 1456215987 is about 1133.4662632333.

The spelling of 1456215987 in words is "one billion, four hundred fifty-six million, two hundred fifteen thousand, nine hundred eighty-seven".