7649139345 has 16 divisors (see below), whose sum is σ = 12239897280. Its totient is φ = 4079116224.

The previous prime is 7649139343. The next prime is 7649139349. The reversal of 7649139345 is 5439319467.

It is not a de Polignac number, because 7649139345 - 2¹ = 7649139343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7649139343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168582 + ... + 209088.

It is an arithmetic number, because the mean of its divisors is an integer number (764993580).

Almost surely, 2^7649139345 is an apocalyptic number.

It is an amenable number.

7649139345 is a deficient number, since it is larger than the sum of its proper divisors (4590757935).

7649139345 is a wasteful number, since it uses less digits than its factorization.

7649139345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53104.

The product of its digits is 2449440, while the sum is 51.

The square root of 7649139345 is about 87459.3582471310. The cubic root of 7649139345 is about 1970.3234410143.

The spelling of 7649139345 in words is "seven billion, six hundred forty-nine million, one hundred thirty-nine thousand, three hundred forty-five".