1451878864 has 20 divisors (see below), whose sum is σ = 2935321056. Its totient is φ = 694376672.

The previous prime is 1451878861. The next prime is 1451878891. The reversal of 1451878864 is 4688781541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451878861) 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, 1972294 + ... + 1973029.

Almost surely, 2^1451878864 is an apocalyptic number.

It is an amenable number.

1451878864 is an abundant number, since it is smaller than the sum of its proper divisors (1483442192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1451878864 is a wasteful number, since it uses less digits than its factorization.

1451878864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945354 (or 3945348 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 52.

The square root of 1451878864 is about 38103.5282355847. The cubic root of 1451878864 is about 1132.3398572507.

The spelling of 1451878864 in words is "one billion, four hundred fifty-one million, eight hundred seventy-eight thousand, eight hundred sixty-four".