137061989 has 2 divisors, whose sum is σ = 137061990. Its totient is φ = 137061988.

The previous prime is 137061983. The next prime is 137062001. The reversal of 137061989 is 989160731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125104225 + 11957764 = 11185^2 + 3458^2 .

It is a cyclic number.

It is not a de Polignac number, because 137061989 - 2⁸ = 137061733 is a prime.

It is a super-2 number, since 2×137061989² = 37571977657272242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137061983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68530994 + 68530995.

It is an arithmetic number, because the mean of its divisors is an integer number (68530995).

Almost surely, 2^137061989 is an apocalyptic number.

It is an amenable number.

137061989 is a deficient number, since it is larger than the sum of its proper divisors (1).

137061989 is an equidigital number, since it uses as much as digits as its factorization.

137061989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 137061989 is about 11707.3476500871. The cubic root of 137061989 is about 515.5914140793.

The spelling of 137061989 in words is "one hundred thirty-seven million, sixty-one thousand, nine hundred eighty-nine".