1214378537 has 2 divisors, whose sum is σ = 1214378538. Its totient is φ = 1214378536.

The previous prime is 1214378513. The next prime is 1214378563. The reversal of 1214378537 is 7358734121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1211805721 + 2572816 = 34811^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214378537 - 2²⁸ = 945943081 is a prime.

It is a super-2 number, since 2×1214378537² = 2949430462252520738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1214378494 and 1214378503.

It is not a weakly prime, because it can be changed into another prime (1214371537) 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, 607189268 + 607189269.

It is an arithmetic number, because the mean of its divisors is an integer number (607189269).

Almost surely, 2^1214378537 is an apocalyptic number.

It is an amenable number.

1214378537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214378537 is an equidigital number, since it uses as much as digits as its factorization.

1214378537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 1214378537 is about 34847.9344725050. The cubic root of 1214378537 is about 1066.8860280078.

The spelling of 1214378537 in words is "one billion, two hundred fourteen million, three hundred seventy-eight thousand, five hundred thirty-seven".