1071490639 has 2 divisors, whose sum is σ = 1071490640. Its totient is φ = 1071490638.

The previous prime is 1071490633. The next prime is 1071490657. The reversal of 1071490639 is 9360941701.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1071490639 is a prime.

It is a super-2 number, since 2×1071490639² = 2296184378929256642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1071490633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535745319 + 535745320.

It is an arithmetic number, because the mean of its divisors is an integer number (535745320).

Almost surely, 2^1071490639 is an apocalyptic number.

1071490639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071490639 is an equidigital number, since it uses as much as digits as its factorization.

1071490639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 1071490639 is about 32733.6316194827. The cubic root of 1071490639 is about 1023.2838668512.

The spelling of 1071490639 in words is "one billion, seventy-one million, four hundred ninety thousand, six hundred thirty-nine".