1451491156 has 12 divisors (see below), whose sum is σ = 2540415892. Its totient is φ = 725658048.

The previous prime is 1451491117. The next prime is 1451491159. The reversal of 1451491156 is 6511941541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 192376900 + 1259114256 = 13870^2 + 35484^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451491159) 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, 28126 + ... + 60778.

Almost surely, 2^1451491156 is an apocalyptic number.

It is an amenable number.

1451491156 is a deficient number, since it is larger than the sum of its proper divisors (1088924736).

1451491156 is a wasteful number, since it uses less digits than its factorization.

1451491156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43770 (or 43768 counting only the distinct ones).

The product of its digits is 21600, while the sum is 37.

The square root of 1451491156 is about 38098.4403355308. The cubic root of 1451491156 is about 1132.2390553825.

The spelling of 1451491156 in words is "one billion, four hundred fifty-one million, four hundred ninety-one thousand, one hundred fifty-six".