7427381501 has 2 divisors, whose sum is σ = 7427381502. Its totient is φ = 7427381500.

The previous prime is 7427381477. The next prime is 7427381509. The reversal of 7427381501 is 1051837247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4355340025 + 3072041476 = 65995^2 + 55426^2 .

It is a cyclic number.

It is not a de Polignac number, because 7427381501 - 2²⁶ = 7360272637 is a prime.

It is a super-2 number, since 2×7427381501² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7427381509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3713690750 + 3713690751.

It is an arithmetic number, because the mean of its divisors is an integer number (3713690751).

Almost surely, 2^7427381501 is an apocalyptic number.

It is an amenable number.

7427381501 is a deficient number, since it is larger than the sum of its proper divisors (1).

7427381501 is an equidigital number, since it uses as much as digits as its factorization.

7427381501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 7427381501 is about 86182.2574605702. The cubic root of 7427381501 is about 1951.0957244010.

The spelling of 7427381501 in words is "seven billion, four hundred twenty-seven million, three hundred eighty-one thousand, five hundred one".