1551479089 has 2 divisors, whose sum is σ = 1551479090. Its totient is φ = 1551479088.

The previous prime is 1551479081. The next prime is 1551479101. The reversal of 1551479089 is 9809741551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1541347600 + 10131489 = 39260^2 + 3183^2 .

It is a cyclic number.

It is not a de Polignac number, because 1551479089 - 2³ = 1551479081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1551479081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775739544 + 775739545.

It is an arithmetic number, because the mean of its divisors is an integer number (775739545).

Almost surely, 2^1551479089 is an apocalyptic number.

It is an amenable number.

1551479089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551479089 is an equidigital number, since it uses as much as digits as its factorization.

1551479089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 49.

The square root of 1551479089 is about 39388.8193400107. The cubic root of 1551479089 is about 1157.6625267073.

The spelling of 1551479089 in words is "one billion, five hundred fifty-one million, four hundred seventy-nine thousand, eighty-nine".