7629820045 has 4 divisors (see below), whose sum is σ = 9155784060. Its totient is φ = 6103856032.

The previous prime is 7629820043. The next prime is 7629820049. The reversal of 7629820045 is 5400289267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5400289267 = 163 ⋅33130609.

It can be written as a sum of positive squares in 2 ways, for example, as 2110667364 + 5519152681 = 45942^2 + 74291^2 .

It is a cyclic number.

It is not a de Polignac number, because 7629820045 - 2¹ = 7629820043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7629819983 and 7629820010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7629820043) 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, 762982000 + ... + 762982009.

It is an arithmetic number, because the mean of its divisors is an integer number (2288946015).

Almost surely, 2^7629820045 is an apocalyptic number.

It is an amenable number.

7629820045 is a deficient number, since it is larger than the sum of its proper divisors (1525964015).

7629820045 is a wasteful number, since it uses less digits than its factorization.

7629820045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525964014.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 7629820045 is about 87348.8411199599. The cubic root of 7629820045 is about 1968.6632384777.

The spelling of 7629820045 in words is "seven billion, six hundred twenty-nine million, eight hundred twenty thousand, forty-five".