7155745790 has 16 divisors (see below), whose sum is σ = 12897506880. Its totient is φ = 2858484000.

The previous prime is 7155745787. The next prime is 7155745811. The reversal of 7155745790 is 975475517.

It is a happy number.

It is a super-2 number, since 2×7155745790² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468905 + ... + 483924.

It is an arithmetic number, because the mean of its divisors is an integer number (806094180).

Almost surely, 2^7155745790 is an apocalyptic number.

7155745790 is a deficient number, since it is larger than the sum of its proper divisors (5741761090).

7155745790 is a wasteful number, since it uses less digits than its factorization.

7155745790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953587.

The product of its (nonzero) digits is 1543500, while the sum is 50.

The square root of 7155745790 is about 84591.6413719464. The cubic root of 7155745790 is about 1927.0144350075.

The spelling of 7155745790 in words is "seven billion, one hundred fifty-five million, seven hundred forty-five thousand, seven hundred ninety".