2190507387 has 8 divisors (see below), whose sum is σ = 2923700736. Its totient is φ = 1458826152.

The previous prime is 2190507383. The next prime is 2190507401. The reversal of 2190507387 is 7837050912.

2190507387 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2190507387 - 2² = 2190507383 is a prime.

It is a super-2 number, since 2×2190507387² = 9596645225003135538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2190507383) 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, 374643 + ... + 380444.

It is an arithmetic number, because the mean of its divisors is an integer number (365462592).

Almost surely, 2^2190507387 is an apocalyptic number.

2190507387 is a deficient number, since it is larger than the sum of its proper divisors (733193349).

2190507387 is an equidigital number, since it uses as much as digits as its factorization.

2190507387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756057.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 2190507387 is about 46802.8566115360. The cubic root of 2190507387 is about 1298.7181421665.

The spelling of 2190507387 in words is "two billion, one hundred ninety million, five hundred seven thousand, three hundred eighty-seven".