1098981377 has 16 divisors (see below), whose sum is σ = 1255927680. Its totient is φ = 953876352.

The previous prime is 1098981353. The next prime is 1098981397. The reversal of 1098981377 is 7731898901.

It is not a de Polignac number, because 1098981377 - 2⁶ = 1098981313 is a prime.

It is a super-2 number, since 2×1098981377² = 2415520133985632258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098981397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13508 + ... + 48789.

It is an arithmetic number, because the mean of its divisors is an integer number (78495480).

Almost surely, 2^1098981377 is an apocalyptic number.

It is an amenable number.

1098981377 is a deficient number, since it is larger than the sum of its proper divisors (156946303).

1098981377 is a wasteful number, since it uses less digits than its factorization.

1098981377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62392.

The product of its (nonzero) digits is 762048, while the sum is 53.

The square root of 1098981377 is about 33150.8880273214. Note that the first 3 decimals coincide. The cubic root of 1098981377 is about 1031.9613793937.

The spelling of 1098981377 in words is "one billion, ninety-eight million, nine hundred eighty-one thousand, three hundred seventy-seven".