70185949 has 4 divisors (see below), whose sum is σ = 73237536. Its totient is φ = 67134364.

The previous prime is 70185919. The next prime is 70185959. The reversal of 70185949 is 94958107.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94958107 = 17 ⋅5585771.

It is a cyclic number.

It is not a de Polignac number, because 70185949 - 2¹⁷ = 70054877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70185919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1525759 + ... + 1525804.

It is an arithmetic number, because the mean of its divisors is an integer number (18309384).

Almost surely, 2^70185949 is an apocalyptic number.

It is an amenable number.

70185949 is a deficient number, since it is larger than the sum of its proper divisors (3051587).

70185949 is a wasteful number, since it uses less digits than its factorization.

70185949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051586.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 70185949 is about 8377.7054734575. The cubic root of 70185949 is about 412.4931353617.

The spelling of 70185949 in words is "seventy million, one hundred eighty-five thousand, nine hundred forty-nine".