1451378011 has 4 divisors (see below), whose sum is σ = 1485131032. Its totient is φ = 1417624992.

The previous prime is 1451377999. The next prime is 1451378017. The reversal of 1451378011 is 1108731541.

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: 1108731541 = 109 ⋅10171849.

It is a cyclic number.

It is not a de Polignac number, because 1451378011 - 2¹³ = 1451369819 is a prime.

It is a super-2 number, since 2×1451378011² = 4212996261628632242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1451378017) 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, 16876446 + ... + 16876531.

It is an arithmetic number, because the mean of its divisors is an integer number (371282758).

Almost surely, 2^1451378011 is an apocalyptic number.

1451378011 is a deficient number, since it is larger than the sum of its proper divisors (33753021).

1451378011 is an equidigital number, since it uses as much as digits as its factorization.

1451378011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33753020.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 1451378011 is about 38096.9554032865. The cubic root of 1451378011 is about 1132.2096349445.

The spelling of 1451378011 in words is "one billion, four hundred fifty-one million, three hundred seventy-eight thousand, eleven".