1438947155707 has 2 divisors, whose sum is σ = 1438947155708. Its totient is φ = 1438947155706.

The previous prime is 1438947155671. The next prime is 1438947155717. The reversal of 1438947155707 is 7075517498341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1438947155707 - 2⁷ = 1438947155579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1438947155717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719473577853 + 719473577854.

It is an arithmetic number, because the mean of its divisors is an integer number (719473577854).

Almost surely, 2^{1438947155707} is an apocalyptic number.

1438947155707 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438947155707 is an equidigital number, since it uses as much as digits as its factorization.

1438947155707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29635200, while the sum is 61.

The spelling of 1438947155707 in words is "one trillion, four hundred thirty-eight billion, nine hundred forty-seven million, one hundred fifty-five thousand, seven hundred seven".