1650606157 has 4 divisors (see below), whose sum is σ = 1663206336. Its totient is φ = 1638005980.

The previous prime is 1650606121. The next prime is 1650606161. The reversal of 1650606157 is 7516060561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1650606157 - 2¹⁵ = 1650573389 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 (1650606107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6299893 + ... + 6300154.

It is an arithmetic number, because the mean of its divisors is an integer number (415801584).

Almost surely, 2^1650606157 is an apocalyptic number.

It is an amenable number.

1650606157 is a deficient number, since it is larger than the sum of its proper divisors (12600179).

1650606157 is a wasteful number, since it uses less digits than its factorization.

1650606157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12600178.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1650606157 is about 40627.6526149370. The cubic root of 1650606157 is about 1181.8104347649.

The spelling of 1650606157 in words is "one billion, six hundred fifty million, six hundred six thousand, one hundred fifty-seven".