49149019 has 2 divisors, whose sum is σ = 49149020. Its totient is φ = 49149018.

The previous prime is 49149013. The next prime is 49149041. The reversal of 49149019 is 91094194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49149019 - 2¹¹ = 49146971 is a prime.

It is a super-2 number, since 2×49149019² = 4831252137324722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49149013) 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 as a sum of consecutive naturals, namely, 24574509 + 24574510.

It is an arithmetic number, because the mean of its divisors is an integer number (24574510).

Almost surely, 2^49149019 is an apocalyptic number.

49149019 is a deficient number, since it is larger than the sum of its proper divisors (1).

49149019 is an equidigital number, since it uses as much as digits as its factorization.

49149019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 49149019 is about 7010.6361337613. The cubic root of 49149019 is about 366.3011521003.

It can be divided in two parts, 49 and 149019, that multiplied together give a triangular number (7301931 = T₃₈₂₁).

The spelling of 49149019 in words is "forty-nine million, one hundred forty-nine thousand, nineteen".