4951819 has 2 divisors, whose sum is σ = 4951820. Its totient is φ = 4951818.

The previous prime is 4951813. The next prime is 4951823. The reversal of 4951819 is 9181594.

4951819 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4951819 - 2⁵ = 4951787 is a prime.

It is a super-2 number, since 2×4951819² = 49041022817522, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4951813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2475909 + 2475910.

It is an arithmetic number, because the mean of its divisors is an integer number (2475910).

Almost surely, 2^4951819 is an apocalyptic number.

4951819 is a deficient number, since it is larger than the sum of its proper divisors (1).

4951819 is an equidigital number, since it uses as much as digits as its factorization.

4951819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 37.

The square root of 4951819 is about 2225.2682984306. The cubic root of 4951819 is about 170.4465652420.

It can be divided in two parts, 49 and 51819, that multiplied together give a triangular number (2539131 = T₂₂₅₃).

The spelling of 4951819 in words is "four million, nine hundred fifty-one thousand, eight hundred nineteen".