7238920765 has 4 divisors (see below), whose sum is σ = 8686704924. Its totient is φ = 5791136608.

The previous prime is 7238920727. The next prime is 7238920769. The reversal of 7238920765 is 5670298327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5670298327 = 62753 ⋅90359.

It can be written as a sum of positive squares in 2 ways, for example, as 2375392644 + 4863528121 = 48738^2 + 69739^2 .

It is a cyclic number.

It is not a de Polignac number, because 7238920765 - 2¹³ = 7238912573 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7238920769) 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, 723892072 + ... + 723892081.

It is an arithmetic number, because the mean of its divisors is an integer number (2171676231).

Almost surely, 2^7238920765 is an apocalyptic number.

It is an amenable number.

7238920765 is a deficient number, since it is larger than the sum of its proper divisors (1447784159).

7238920765 is a wasteful number, since it uses less digits than its factorization.

7238920765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447784158.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 7238920765 is about 85081.8474470318. The cubic root of 7238920765 is about 1934.4519245344.

The spelling of 7238920765 in words is "seven billion, two hundred thirty-eight million, nine hundred twenty thousand, seven hundred sixty-five".