1072668451 has 4 divisors (see below), whose sum is σ = 1095491232. Its totient is φ = 1049845672.

The previous prime is 1072668449. The next prime is 1072668461. The reversal of 1072668451 is 1548662701.

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 1072668451 - 2¹ = 1072668449 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1072668461) 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, 11411320 + ... + 11411413.

It is an arithmetic number, because the mean of its divisors is an integer number (273872808).

Almost surely, 2^1072668451 is an apocalyptic number.

1072668451 is a deficient number, since it is larger than the sum of its proper divisors (22822781).

1072668451 is an equidigital number, since it uses as much as digits as its factorization.

1072668451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22822780.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1072668451 is about 32751.6175325739. The cubic root of 1072668451 is about 1023.6586701498.

The spelling of 1072668451 in words is "one billion, seventy-two million, six hundred sixty-eight thousand, four hundred fifty-one".