1455015140 has 24 divisors (see below), whose sum is σ = 3056279352. Its totient is φ = 581863680.

The previous prime is 1455015139. The next prime is 1455015157. The reversal of 1455015140 is 415105541.

It can be written as a sum of positive squares in 4 ways, for example, as 10407076 + 1444608064 = 3226^2 + 38008^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121502 + ... + 132938.

It is an arithmetic number, because the mean of its divisors is an integer number (127344973).

Almost surely, 2^1455015140 is an apocalyptic number.

1455015140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1455015140 is an abundant number, since it is smaller than the sum of its proper divisors (1601264212).

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

1455015140 is a wasteful number, since it uses less digits than its factorization.

1455015140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17807 (or 17805 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1455015140 is about 38144.6607010732. The cubic root of 1455015140 is about 1133.1546121487.

The spelling of 1455015140 in words is "one billion, four hundred fifty-five million, fifteen thousand, one hundred forty".