1451951849 has 4 divisors (see below), whose sum is σ = 1458183636. Its totient is φ = 1445720064.

The previous prime is 1451951833. The next prime is 1451951869. The reversal of 1451951849 is 9481591541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9481591541 = 307 ⋅30884663.

It can be written as a sum of positive squares in 2 ways, for example, as 453391849 + 998560000 = 21293^2 + 31600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451951849 - 2⁴ = 1451951833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1451951869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3115544 + ... + 3116009.

It is an arithmetic number, because the mean of its divisors is an integer number (364545909).

Almost surely, 2^1451951849 is an apocalyptic number.

It is an amenable number.

1451951849 is a deficient number, since it is larger than the sum of its proper divisors (6231787).

1451951849 is an equidigital number, since it uses as much as digits as its factorization.

1451951849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6231786.

The product of its digits is 259200, while the sum is 47.

The square root of 1451951849 is about 38104.4859432587. The cubic root of 1451951849 is about 1132.3588309272.

The spelling of 1451951849 in words is "one billion, four hundred fifty-one million, nine hundred fifty-one thousand, eight hundred forty-nine".