1491023410 has 16 divisors (see below), whose sum is σ = 2756379096. Its totient is φ = 580290048.

The previous prime is 1491023363. The next prime is 1491023411. The reversal of 1491023410 is 143201941.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1110422329 + 380601081 = 33323^2 + 19509^2 .

It is not an unprimeable number, because it can be changed into a prime (1491023411) 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, 2014527 + ... + 2015266.

Almost surely, 2^1491023410 is an apocalyptic number.

1491023410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1491023410 is a deficient number, since it is larger than the sum of its proper divisors (1265355686).

1491023410 is a wasteful number, since it uses less digits than its factorization.

1491023410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029837.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1491023410 is about 38613.7722839921. The cubic root of 1491023410 is about 1142.4261988536.

The spelling of 1491023410 in words is "one billion, four hundred ninety-one million, twenty-three thousand, four hundred ten".