7149851905 has 48 divisors (see below), whose sum is σ = 10524790080. Its totient is φ = 4636372608.

The previous prime is 7149851851. The next prime is 7149851911. The reversal of 7149851905 is 5091589417.

7149851905 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7149851905 - 2¹⁷ = 7149720833 is a prime.

It is a super-2 number, since 2×7149851905² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3597322 + ... + 3599308.

It is an arithmetic number, because the mean of its divisors is an integer number (219266460).

Almost surely, 2^7149851905 is an apocalyptic number.

It is an amenable number.

7149851905 is a deficient number, since it is larger than the sum of its proper divisors (3374938175).

7149851905 is a wasteful number, since it uses less digits than its factorization.

7149851905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798 (or 2791 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 49.

The square root of 7149851905 is about 84556.7969178114. The cubic root of 7149851905 is about 1926.4852229359.

The spelling of 7149851905 in words is "seven billion, one hundred forty-nine million, eight hundred fifty-one thousand, nine hundred five".