1451401615 has 4 divisors (see below), whose sum is σ = 1741681944. Its totient is φ = 1161121288.

The previous prime is 1451401603. The next prime is 1451401643. The reversal of 1451401615 is 5161041541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5161041541 = 31 ⋅166485211.

It is a cyclic number.

It is not a de Polignac number, because 1451401615 - 2¹³ = 1451393423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145140157 + ... + 145140166.

It is an arithmetic number, because the mean of its divisors is an integer number (435420486).

Almost surely, 2^1451401615 is an apocalyptic number.

1451401615 is a deficient number, since it is larger than the sum of its proper divisors (290280329).

1451401615 is an equidigital number, since it uses as much as digits as its factorization.

1451401615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290280328.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 1451401615 is about 38097.2651905619. The cubic root of 1451401615 is about 1132.2157726819.

The spelling of 1451401615 in words is "one billion, four hundred fifty-one million, four hundred one thousand, six hundred fifteen".