137983481 has 2 divisors, whose sum is σ = 137983482. Its totient is φ = 137983480.

The previous prime is 137983457. The next prime is 137983507. The reversal of 137983481 is 184389731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119355625 + 18627856 = 10925^2 + 4316^2 .

It is a cyclic number.

It is not a de Polignac number, because 137983481 - 2¹⁴ = 137967097 is a prime.

It is a super-2 number, since 2×137983481² = 38078882057754722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (137983451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68991740 + 68991741.

It is an arithmetic number, because the mean of its divisors is an integer number (68991741).

Almost surely, 2^137983481 is an apocalyptic number.

It is an amenable number.

137983481 is a deficient number, since it is larger than the sum of its proper divisors (1).

137983481 is an equidigital number, since it uses as much as digits as its factorization.

137983481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 137983481 is about 11746.6370080973. The cubic root of 137983481 is about 516.7443049938.

The spelling of 137983481 in words is "one hundred thirty-seven million, nine hundred eighty-three thousand, four hundred eighty-one".