1354865990 has 16 divisors (see below), whose sum is σ = 2453365152. Its totient is φ = 538700544.

The previous prime is 1354865971. The next prime is 1354865999. The reversal of 1354865990 is 995684531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1354865999) 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 7 ways as a sum of consecutive naturals, for example, 403979 + ... + 407318.

It is an arithmetic number, because the mean of its divisors is an integer number (153335322).

Almost surely, 2^1354865990 is an apocalyptic number.

1354865990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1354865990 is a deficient number, since it is larger than the sum of its proper divisors (1098499162).

1354865990 is a wasteful number, since it uses less digits than its factorization.

1354865990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811471.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 1354865990 is about 36808.5043162582. The cubic root of 1354865990 is about 1106.5357433101.

The spelling of 1354865990 in words is "one billion, three hundred fifty-four million, eight hundred sixty-five thousand, nine hundred ninety".