1675444157 has 4 divisors (see below), whose sum is σ = 1675526460. Its totient is φ = 1675361856.

The previous prime is 1675444153. The next prime is 1675444159. The reversal of 1675444157 is 7514445761.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1517414116 + 158030041 = 38954^2 + 12571^2 .

It is a cyclic number.

It is not a de Polignac number, because 1675444157 - 2² = 1675444153 is a prime.

It is a super-2 number, since 2×1675444157² = 5614226246450881298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1675444151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14219 + ... + 59607.

It is an arithmetic number, because the mean of its divisors is an integer number (418881615).

Almost surely, 2^1675444157 is an apocalyptic number.

It is an amenable number.

1675444157 is a deficient number, since it is larger than the sum of its proper divisors (82303).

1675444157 is an equidigital number, since it uses as much as digits as its factorization.

1675444157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82302.

The product of its digits is 470400, while the sum is 44.

The square root of 1675444157 is about 40932.1897410828. The cubic root of 1675444157 is about 1187.7088314098.

The spelling of 1675444157 in words is "one billion, six hundred seventy-five million, four hundred forty-four thousand, one hundred fifty-seven".