1491380270 has 16 divisors (see below), whose sum is σ = 2699319168. Its totient is φ = 593255520.

The previous prime is 1491380263. The next prime is 1491380273. The reversal of 1491380270 is 720831941.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1491380270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491380273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410174 + ... + 413793.

It is an arithmetic number, because the mean of its divisors is an integer number (168707448).

Almost surely, 2^1491380270 is an apocalyptic number.

1491380270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1491380270 is a deficient number, since it is larger than the sum of its proper divisors (1207938898).

1491380270 is a wasteful number, since it uses less digits than its factorization.

1491380270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824155.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1491380270 is about 38618.3928976854. The cubic root of 1491380270 is about 1142.5173339514.

The spelling of 1491380270 in words is "one billion, four hundred ninety-one million, three hundred eighty thousand, two hundred seventy".