1948840739 has 2 divisors, whose sum is σ = 1948840740. Its totient is φ = 1948840738.

The previous prime is 1948840717. The next prime is 1948840763. The reversal of 1948840739 is 9370488491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1948840739 - 2¹⁶ = 1948775203 is a prime.

It is a super-2 number, since 2×1948840739² = 7595960451972132242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1948840769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974420369 + 974420370.

It is an arithmetic number, because the mean of its divisors is an integer number (974420370).

Almost surely, 2^1948840739 is an apocalyptic number.

1948840739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948840739 is an equidigital number, since it uses as much as digits as its factorization.

1948840739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 1948840739 is about 44145.6763341553. The cubic root of 1948840739 is about 1249.0853552232.

The spelling of 1948840739 in words is "one billion, nine hundred forty-eight million, eight hundred forty thousand, seven hundred thirty-nine".