49311019 has 2 divisors, whose sum is σ = 49311020. Its totient is φ = 49311018.

The previous prime is 49310971. The next prime is 49311029. The reversal of 49311019 is 91011394.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49311019 is a prime.

It is a super-2 number, since 2×49311019² = 4863153189636722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49311029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24655509 + 24655510.

It is an arithmetic number, because the mean of its divisors is an integer number (24655510).

Almost surely, 2^49311019 is an apocalyptic number.

49311019 is a deficient number, since it is larger than the sum of its proper divisors (1).

49311019 is an equidigital number, since it uses as much as digits as its factorization.

49311019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 49311019 is about 7022.1805018100. The cubic root of 49311019 is about 366.7031656045.

The spelling of 49311019 in words is "forty-nine million, three hundred eleven thousand, nineteen".