1455811940 has 24 divisors (see below), whose sum is σ = 3335133312. Its totient is φ = 529386080.

The previous prime is 1455811891. The next prime is 1455811943. The reversal of 1455811940 is 491185541.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1455811894 and 1455811903.

It is not an unprimeable number, because it can be changed into a prime (1455811943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3308444 + ... + 3308883.

It is an arithmetic number, because the mean of its divisors is an integer number (138963888).

Almost surely, 2^1455811940 is an apocalyptic number.

1455811940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1455811940 is an abundant number, since it is smaller than the sum of its proper divisors (1879321372).

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

1455811940 is a wasteful number, since it uses less digits than its factorization.

1455811940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617347 (or 6617345 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 1455811940 is about 38155.1037215207. The cubic root of 1455811940 is about 1133.3614216414.

The spelling of 1455811940 in words is "one billion, four hundred fifty-five million, eight hundred eleven thousand, nine hundred forty".