1501949 has 2 divisors, whose sum is σ = 1501950. Its totient is φ = 1501948.

The previous prime is 1501943. The next prime is 1501957. The reversal of 1501949 is 9491051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1416100 + 85849 = 1190^2 + 293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1501949 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1501943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750974 + 750975.

It is an arithmetic number, because the mean of its divisors is an integer number (750975).

2^1501949 is an apocalyptic number.

It is an amenable number.

1501949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1501949 is an equidigital number, since it uses as much as digits as its factorization.

1501949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 1501949 is about 1225.5402890154. The cubic root of 1501949 is about 114.5209816434.

The spelling of 1501949 in words is "one million, five hundred one thousand, nine hundred forty-nine".