1405158990 has 32 divisors (see below), whose sum is σ = 3463529760. Its totient is φ = 364581504.

The previous prime is 1405158977. The next prime is 1405158991. The reversal of 1405158990 is 998515041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405158991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631845 + ... + 634064.

It is an arithmetic number, because the mean of its divisors is an integer number (108235305).

Almost surely, 2^1405158990 is an apocalyptic number.

1405158990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1405158990 is an abundant number, since it is smaller than the sum of its proper divisors (2058370770).

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

1405158990 is a wasteful number, since it uses less digits than its factorization.

1405158990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265956.

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 1405158990 is about 37485.4503774464. The cubic root of 1405158990 is about 1120.0613779076.

The spelling of 1405158990 in words is "one billion, four hundred five million, one hundred fifty-eight thousand, nine hundred ninety".