1640224151 has 4 divisors (see below), whose sum is σ = 1648811904. Its totient is φ = 1631636400.

The previous prime is 1640224129. The next prime is 1640224169. The reversal of 1640224151 is 1514220461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1514220461 = 13 ⋅116478497.

It is a cyclic number.

It is not a de Polignac number, because 1640224151 - 2⁶ = 1640224087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1640224151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640224051) 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 3 ways as a sum of consecutive naturals, for example, 4293590 + ... + 4293971.

It is an arithmetic number, because the mean of its divisors is an integer number (412202976).

Almost surely, 2^1640224151 is an apocalyptic number.

1640224151 is a deficient number, since it is larger than the sum of its proper divisors (8587753).

1640224151 is an equidigital number, since it uses as much as digits as its factorization.

1640224151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8587752.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1640224151 is about 40499.6808752859. The cubic root of 1640224151 is about 1179.3274322500.

The spelling of 1640224151 in words is "one billion, six hundred forty million, two hundred twenty-four thousand, one hundred fifty-one".