1420190591 has 8 divisors (see below), whose sum is σ = 1569111264. Its totient is φ = 1278534400.

The previous prime is 1420190561. The next prime is 1420190609. The reversal of 1420190591 is 1950910241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1420190591 - 2¹⁴ = 1420174207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420190521) 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, 1815710 + ... + 1816491.

It is an arithmetic number, because the mean of its divisors is an integer number (196138908).

Almost surely, 2^1420190591 is an apocalyptic number.

1420190591 is a deficient number, since it is larger than the sum of its proper divisors (148920673).

1420190591 is a wasteful number, since it uses less digits than its factorization.

1420190591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632241.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 1420190591 is about 37685.4161579781. The cubic root of 1420190591 is about 1124.0411493465.

The spelling of 1420190591 in words is "one billion, four hundred twenty million, one hundred ninety thousand, five hundred ninety-one".